When to Give Up?

[Upwards]

That is up to you. You want to grow? You want to live? Then do it. The only one stopping you is you.

I know how much sense that makes and how true that statement is but actually putting it into practise is a whole other ball game, I know I hold the key but i'm not brave enough or strong enough to put it in that lock... I dont know how to find that strength, I know I have it within me but cant locate it at the moment!