I hope that from this point, you will learn to choose yourself before anything else. It is not a selfish act, It is the kindest love you could give in this world. You are part of this world and don't you ever forget that. 
To put yourself first is not a wrong thing especially when all you did in life is to give. Fill up yourself consistently so you can continue pouring out the love and kindness to others. 
You deserve the long hugs you gave to those friends who need it.
You deserve to taste the meal you cook specially for your love ones.
You deserve the inner peace you granted to everyone around you.
Just like those people you turned as your life, You are your life too.
You belong to no one but you. 
I hope that from this point, you'll be able to unleash the tie that holds you from choosing yourself as your favorite person.