I don't know about you, but God fills me with joy!! Because during trial and tribulation, He is always there AND He will make good come from the bad! You may think that you have absolutely nothing to offer to the world, but that's the WONDER of it all! God makes SOMETHING from NOTHING.
Changing something rough and tough into something BEAUTIFUL can't be easy. It will take time and a whole lot of difficulties to make it through to the end result, but God is with us through it ALL.
"Therefore, if anyone is in Christ he is a NEW creation; the old has gone and the NEW has come." 2 Corinthians 5:17
If you have God in your life, you are and are becoming a NEW CREATION!! Your past has been put behind you and you can move on to newer and better things! You have to let God shape you, let Him make you NEW.
That isn't something easy, and it probably won't happen over night, but NEVER GIVE UP.
YOU can do it! YOU can become NEW. YOU can move past all of your regrets. If you let God into your life and you put Him in control, YOU can become NEW, because God brings beauty from pain.