When you trust Jesus as your personal Saviour, you begin to understand and experience more the love God has for you. Then gradually over time, God's love changes you as you follow Jesus. You don’t change in order to be loved, rather you change because you are loved.
Through His death on the cross, and then coming back from the dead, Jesus took all of your wrong and gave you all of His right.
If you believe that and commit to following Him, the promise is this; your life will never be the same. It’s as simple as turning from your sin, declaring you want to follow Jesus, and believing He is who He says He is.
Once you have made that decision to follow Jesus - being baptized is the perfect next step to publicly declare your faith in him, along with the death of your old life and beginning of your new life.