I think above all else. At the end of the day, the character of a person matters the most. The deeds they have done, the person that they are, how they treat others, how they treat themselves, their intentions, honesty, and the convictions that they stand by. Everything else like looks or success matter very little.
Be with someone who makes you better.
If you are lucky enough to find a weirdo never let them go
The best kind of people are the ones that come into your life, and make you see the sun where you once saw clouds. The people that believe in you so much, you start to believe in you too. The people that love you, simply for being you. The once in a lifetime kind of people.