People don't need to strive or first clean up their own life to come to Christ (the God of the Bible). That'd be so in vain religious self-will sort of reformation, a vain effort and God's never been religious at all. If you're not sure and lack assurance assurance.
You simply turn away from sin to God ..yes.. on His terms just as the Bible tells us, and trust Him. Yes, coming to Him as you are and He will forgive and clean your up life. Then, as you continue to worship and follow the Lord, as He meets all your needs.. He's got stuff for you to do.