According to this, unlikely: ‘Most of us are too busy to be better’: the lazy person’s guide to self-improvement | Life and style | The Guardian
So if you only take 10 minutes to try and improve, not much will happen. But do 10 minutes every day. 10 minutes every day adds up to 60 hours a year. 15 minutes is over 90 hours. You can improve noticeably if you do that.
So what can you do in 10 minutes? Well, HIIT exercise, for one thing. A drawing can be done in 10 minutes: do 365 of them and you will get better. Stretching can be done in that time and you will be more flexible by then. Pick any area you are interested in improving, and practice to be better every day, and you will see improvement.