Yes, absolutely there is hope! I had PTSD for years, tried to stuff it down, pretended a lot, until I felt dead inside. You didn't say what caused yours, and it can be lots of different things, but for me it was rape. Each person's triggers will be different depending on what caused the trauma. I am healed and free from all the things that plagued me then: hatred, desire for revenge, nightmares, self-loathing, disgust, emotional/mental instability, rage, fear, and despair.
One thing to do first is to separate "then" from "now." What happened then does NOT define you as a person. Yes, trauma hits us deeply and hard, but you have a decision to make: will you let it own you/control your entire future, or will you put it in its place (the past) and take control of how you will live your life now? Don't believe lies that you are damaged goods, that you are permanently ruined, that you are unlovable, that you can't get past it, etc. These are unproductive and they are LIES. You are a precious person, loved by God, with gifts and talents to share with the world...don't let the thing that happened steal from you the life that God intended.
I do highly recommend therapy, with someone who specializes in YOUR type of trauma. The way PTSD is treated depends on what happened. War is way different than a sexual crime against you. Witnessing a murder is way different than being in a horrific accident. So make sure you find a counselor who is highly recommended and isn't a newbie (experience counts for a lot).
I was helped in therapy, but the thing that helped the most was a support group, led by a therapist, guiding a small group of women through a one-year program of healing (all had been sexually abused in some way, as had the therapist). It was faith-based, held in a church, and it was the hardest, most healing, most productive thing I did in my years of seeking help. I also have a wonderful husband who held my hand through all the ugliness and darkness. Having at least one person in your life who will sit with you, cry with you, hold your hand, hold you when you weep, pray for you, whatever...you need that. I hope you have one trusted friend or family member who can be this support for you.
You have to walk towards the pain, face it head-on, and defeat it step by step. It's hard work, but pure worth it. Seek God's help, too; He's right there, waiting to be asked. He desires nothing more than to come alongside us in this challenging thing called life...to comfort, heal, guide, and listen. He is FOR you, not against you. He has restored me and my life is joyful and peaceful for the most part (but not perfect). I haven't forgotten what happened, but it doesn't trigger me any longer, it's more like a scar that has healed but is noticeable. It has enabled me to offer comfort and encouragement to others as well, which adds to the healing. May it be so for you.