How honest am I to myself?

"I can do it, I believe that I can do it!" Yes, this is how strong I thought I can be. Yet, there are times when I break into tears; too frequently... The process goes on and on.

Now, the question surfaced - how honest am I to myself? I can't find the answer to this question. How do you differentiate between determination and a lie? When I always tell myself that I can do it, there is always this doubt which I never have the courage to face - am I being brave, or am I just lying?I can't trust my own feelings (other than something which I'm so sure, but trying hard to make it unreal).

Perhaps you may/may not know what I'm referring to, but, the point is that - how, and where can I get the assurance so that I can settle down? I admit - I have created this wound that probably I'll never recover from. How foolish am I to land myself in such a dilemma...