This is a common mistake among professing Christians. The apostle Paul had to correct some believers in Galatia who had the same idea. They talked about the need to keep many of the regulations of the Old Testament law system. If so, rest on His finished work on the cross for you, and rejoice and give thanks. Don't make the common mistake of thinking that you can earn His favor.
Salvation is an unearned blessing given to an unworthy sinner.