Its never too late once you turn to God and the teachings of Yeshua, aka Christ aka that dude. Tips, well like anything, being in league with demons is like being hooked on drugs. You're essentially a junky. Have you ever been sitting there minding your business or been demoralized or lost in some manner and then suddenly out of nowhere a demonic impulse just crept into you to do something demonic? This is how powerful the demonic realm is.
What can you do though, i mean you're only human with demonic urges that feel natural right? Well its hard but you have to go cold turkey. You have to cut off evil like a cancer. You have to get rid of demonic friends and replace them with individuals who are on the same page spiritual without alterior motives. These people are like your 12 step support group and serve to keep you honest with yourself and your God.
You have to stop demonic activities that lead you to demonic situations like clubbing and perhaps, club at the church.

You have to keep your mouth shut if you dont have something good to say, and do your best to say more good things.
You have to do charity work and help others because the feeling you get helping people and seeing their satisfaction is worth its weight in gold (please hold im tearing up at the moment writing that last sentence) Most importantly, you have to ask for forgiveness with the Lords prayer when you sin and if you mean it in your heart you will be forgiven. ................................... Basically, friend, you have to just cut off evil, own up to your mistakes and be sincere when you seek redemption and i mean that from my heart like sincerity, friend.