Most of the time with this pressure we forget that it is okay to be selfish in a healthy way, in the sense of doing what you want to do for you and God, not for your parents or to make the most money or what makes you look smart, but truly what you want to do it your life.
We say things like "I guess", "I don't know", "maybe", "sort of" "kind of" these words do not show any kind of security in ourselves and give other people the control, and some people may take advantage of that.
Saying these things makes us vulnerable, and it gives the other person or people the opportunity to pursue you in a way that you usually don't want to do.
Do what you want to do, because no matter what God is in ultimate control which means that no matter what He is going to make anything and every work if it is of Him. He will take open and close doors and if we are scared of doing what we want to do, we will miss those open doors. Take control of your life and stand strong in what you believe in, because God is there with you.
I am not encouraging you to go out hurt people by being selfish, and not caring what you are doing. Don't walk on people, don't take advantage of your words and your actions because they can get you in some dark places.
YOU ARE YOU, everyone else is taken, SO BE YOU.
Don't give other people that control and the advantage of making decisions for you, you may get hurt.