Here's something I've added to the guide. The personality changes from high mana affinities. Can be added to a player's character sheet where they write in the Personal Characteristics from their Background.
Air
Minor: I become bored with things quickly, and will abruptly drop what I’m doing to move on to something more interesting. What were we talking about? Let’s go fly a kite!
Major: I find it impossible to stay still, and am constantly moving. There’s too much to see and do than to stay in one place longer than a few hours, and if there isn’t a risk of injury or death then it isn’t worth doing.
Body
Minor: If I won’t get caught, it’s easier to just take what I want than ask permission. The weak should serve the strong.
Major: When I want something I must have it, no matter what is in my way. I have no problem doing whatever it takes to get what I want, even if it means hurting others. Might makes right.
Chaos
Minor: I feel the need to make things interesting, and there’s nothing wrong with a good prank even if I’m the only one laughing.
Major: I live to cause others strife. Destruction and death are my main sources of entertainment.
Creation
Minor: I’m very curious and creative, and more of a dreamer than practical. I like to make things, even if there’s no real purpose for them.
Major: My art is my life. I have so many great ideas that I feel like I’m going to burst. Wait here while I write something down.
Death
Minor: I tend to have a resigned view of life. I also find physical needs such as eating and bathing annoying as it wastes a lot of time. I tend to ignore personal hygiene.
Major: Whatever will be, will be. There may be nothing I can do to change it. In the end death will be sweet release, undeath may be even sweeter.
Dimension
Minor: I like to be around others, and to be in control of who’s around me. Having the higher ground in my relationships is very important.
Major: My worth is determined purely by my power over others. The well-being of myself, family, and things I value doesn’t matter, as long as it’s better off than everyone else’s. I’m obsessed with the people or things I love.
Earth
Minor: There’s nothing like good, hard work.
Major: The traditions of my ancestors are sacred to me, and I have a duty to continue them.
Enchantment
Minor: I’m quite charming and friendly. I know how to make people feel comfortable, as I’m a very understanding person.
Major: I believe there is good in everyone, and have faith that I can bring out the best in them.
Entropy
Minor: I find it hard to feel good about myself or experience pleasure. Achieving my goals seems near impossible.
Major: I am miserable all the time, and everyone should be miserable with me. I want to achieve great things, but know that I can’t have them, and if I can’t be happy then no one else should be either.
Force
Minor: I try to be friendly with others, but not overbearing. I like to avoid extremes.
Major: Everything in moderation. Balance must be kept, as must one’s word.
Fire
Minor: I am very passionate about the things I like and believe in, and when I devote myself to something I do so completely.
Major: Nothing is more important than what I feel strongly about. My beliefs are more important than life itself.
Ice
Minor: I can be quite stubborn, and a bit of a curmudgeon. I don’t like change, and as long as things stay that way I’m happy.
Major: I need things to stay the same, and get extremely angry if they don’t. Things are always changing too fast, and I just want to be left alone. Hey! Get off my lawn!
Law
Minor: I try to be as objective as I can. Emotions should not interfere with judgement, and rules are very important to me.
Major: I am strict, emotionless, and unyielding to friend and foe alike. None can escape justice and the rule of law.
Light
Minor: I have a large bump of curiosity, as I’m not content with how things appear. I have a philosophical bent and enjoy a good discussion of new ideas.
Major: I need to know how things work so I can illuminate the misunderstandings of the world. I try to make sure everyone may understand each other through long discussion.
Life
Minor: I feel compassion for those who need help, and do what I can for them.
Major: Life is a struggle. I will do whatever is needed of me to help others.
Metamagic
Minor: I have a thirst for knowledge, and find myself constantly reading to learn new things.
Major: I love to learn new things, but would much rather learn it from a book. Why go out and learn things the hard way when it’s all right here in the library?
Mind
Minor: I like to outwit people, and find I’m often the smartest person in the room. I have dreams of greatness, and know how to get there.
Major: I want more, whether its money or power. No matter how much I have, I need more.
Nature
Minor: I have a lot of patience. I know the things I set out to do will happen one day, little by little. I also love long walks in the woods.
Major: Everything in it’s own time. Personal growth will come, and I am quite patient with others, as long as I see improvement. Also, the forest gives me everything I need.
Shadow
Minor: Coloring the truth a bit makes life more interesting. I do what I can to get ahead, because everyone fudges the rules a little bit anyway.
Major: No one is innocent underneath. Cheating is part of the game and if they’re not cheating to get ahead then they deserve to be taken advantage of.
Spirit
Minor: I’m kind, gentle, and caring. I like to lift others spirits, and bring them good cheer.
Major: I can see into the hearts of others, and believe that even the worst of us can be redeemed. Mercy is a virtue.
Water
Minor: I’m quite calm. I get along well with others even though I’m not outgoing.
Major: Nothing can really get me upset. Everything is going to be okay, and I’m pretty content with the way things are.