4gvn...
I can assure you that you are NOT alone in what you are struggling with. I think that very few of us can say this has never been an issue in our own lives. Here is some advice I can give you that comes from personal experience.
You have to come to a point where you find your identity in Christ. Words hurt and hold us back because we ascribe value to those words, or because we ascribe more value to those words than we do to the truth. You have to realize that your identity is firmly fixed in the Word of God. It is His opinion of you that really matters. It is in spending time in His word and in His presence that we truly learn who we are in Him. What does He say about you? That is who you are. The neat thing about having your identity in Him is that the His criticism does not hurt. It heals, and propels us toward change that makes us more like Him.
You also have to leave the past behind. This is difficult sometimes, but Paul instructs us that it is VERY important. In Philippians, Paul lists all of his fleshly pedigree, and then says that he does not counted himself to have apprehended but one thing. Forgetting the past, he presses on in Christ. This ONE thing is huge in the life of a believer. It is damaging to build altars and idols in the past, whether they be to failure or to success. Many denominations are altars to a past move of God. God moved on. The people stayed at the altar of the past. Many believers are crippled because of regret and an altar built to the failure that they used to be. We have to forget that, and press on.
I was hurt by the words of _________. So I must forgive that person, look steadfastly to Christ, believe what He says about me, and press on, never looking back to that hurt again. I must allow Him to heal me.
This is not an overnight event, but a process. But I MUST start the process with a firm decision and than I have to take EVERY thought captive unto the obedience of Christ.
Give the hurt to Him. Ask Him to heal you. He will do it. Forgive, forgive, forgive. Then, sink yourself steadfastly into His word. Find out who He says you are. Find your identity in Him and press forward into what He is calling you to do.