Repent of your sins. Pray to the Lord Jesus Christ for forgiveness. Pray for the strength to sin no more and to avoid the near occasion of sin.
Stop blaming the world for your choices. Take control of your life by giving it to God and asking for His help. He will carry you if you ask.
A lot of the shills here will ree at me, but I don't care.
I have my own sins. My own problems that I'm dealing with. One thing I found profoundly helpful, as a Catholic, is the ability to go to confession. The ability to go to a priest and hear him, on behalf of Jesus, absolve me of my sins. To take away my shame and self loathing and give me penance that I might come closer to God.
Remember, no matter how hard your life is, it is nothing compared to what Jesus went through for you. He carried His cross to His death. Before hand, He was beaten to the point of having the crown of thorns puncture His skull and enter His brain. And yet even after all of that, the thing He sorrowed over most was how His mother felt.
We all stumble anon. We all fall short of the Lord. The only way forward is to confess your sins and pray daily. It is good that you are already doing it. But the next time you start thinking of sinning, pray instead. Read a verse of the Bible, and repeat it in your head over and over. Or just simply repeat "I love you God, thank you for everything. You are a most merciful God who loves me and I love you.", etc. Something along those lines. Ask God for understanding, strength, courage and wisdom. Ask Him to guide you, and He will.
Good luck anon. This was just a setback, and not the end, or a demonstration of who you are. Remember that. Love God, and let God love you. Do not judge yourself harsher than God judges you. That's probably the most important rule to learn.