Your suffering is surely not in vain. There is greatness inside of you. God's ultimate plan is to bring out the best version of who we are, and He does this through our suffering. Don't give up. Keep your feet planted in Christ Jesus. You are built for whatever giant you feel like you are facing right now. Trust God, and watch Him demolish anything standing in your way. His grace is suffient. Just wait awhile and see the finished product... A NEW YOU
1 Peter 5:10 says, "And after you have suffered a little while, the God of all grace, who has called you to his eternal glory in Christ, will himself restore, confirm, strengthen, and establish you."