Questioning when.

When do you decide that there is nothing you can do and you should just give-up and when you know that in your heart this is what you really want and you should just keep trying until you eventually succeed? 

When do you do something because you know it is important to someone who is important to you and when do say "no" and refuse no matter what? 

When does how your acting become more than just friends and when does how your acting become not even friends?   

When do you stop what you are doing because it is annoying to the other, and when do you continue on, knowing that you are only doing because you care about them?            

When do you try to do all you can to be who you want to be and when do you settle for who you know you actually are?

When do you avoid becoming a stereotype and when do you realize it is okay to be that if thats just who you are?

When do you stop asking questions and just allow things to pan out and when do refuse to settle for mere existence and live with purpose?