Most people do not deal well with happiness; I think some are just good at faking it. You are certainly not weak willed! I've seen your firey spirit right here on these forums! You cannot will your way out of a depression even you think you can while depressed. You know that one is a lie; call it as such. Keep your head up, my friend, you are doing nothing wrong. And you are one hell of a friend; I can tell. You've always welcomed me. I sincerely hope you are feeling better soon. You deserve it!