You will improve what you practice, possibly. This is advice for learning to play by ear. I was given the exact opposite advice by my classical guitar teacher in college because I was playing one thing and hearing something else. Sometimes, practice makes you worse or is a waste of time at best. If I could give better advice, it would be to be brutally mindful of what you are playing. Record it, and hear what is there. If it isn’t painful, you probably aren’t practicing.