My daughter is 3 years old and I'm a teen mom. Is it wrong that I think of giving her up for adoption so she can have a better life?

No, dear. That's the cruellest thing you can do to your daughter at this stage. Children won't know what luxury is until you show them. Show that the life you give her is the luxury so she ll love you for keeping instead of casting away and value the things of life too. Giving up on her will tortue your conscience and you will be miserable till you die. Get some, any help to bring her up and buckle up until she is a few years older. Soon she is will be looking after you an caring for you. BTW think about all the ancient mothers who were by default were teen moms not by accident but by choice. They had less facilities less income etc.. if they can do as a norm why can't you do it? Once you take the best decision rest of your is going to be easy. It is all in the mind. Our mind can be the ladder to go on the sucess roller coaster or the broken bungee rope that lets you live in the deepest pit for ever. So choose wisely.