There is something to be said of enduring trials. There is also something to be said of falling flat on your face and getting right back up. Both happen, both will happen to you at one time or another, how you choose to respond is the key. Am I perfect will I fail sure but when I fail the after is really going to determine a lot.

Satan wants to get you to believe that your a failure and that when you fail your unworthy to approach the throne room, but did you know that your Heavenly Father desires that more than even when you fail...He wants you to come to Him to seek out His love, His comfort. When you fail I would seek after Jesus, He will comfort you, He will hold you, He will teach you how to defend against the temptation and how to either fight or run from that temptation. I can speak from experience that it's hard but if you ask Jesus will deliver you
Psalm 54:7 (NKJV)

⁷ For He has delivered me out of all trouble;
And my eye has seen its desire upon my enemies.

I must implore you though Jesus wants all of you and if your willing to give it all you need to do is ask and It will be given to you remember your not alone in this and every single christian has this same problem. King David dealt with some of the same stuff that we as christian's deal with today and yet God called him a man after His own heart. My encouragement is that you would relate to King David read the Psalms and remember that when you fall your not to stay down you are to get back up dust yourself off remind yourself and Satan that your a child of the Most High and you are worthy