When you play your instrument, it is important to repeat the same things, but also to repeat with a different “angle”. It can be a different rhythm, speed, or style. Trying something new will wake your brain and help you focus on what you are learning. It is also much more fun!
Play Piano using different emotions
This is an advanced example, from a proffessional musician, but it’s great inspiration for how you can play the same tune but make it feel very different. You don’t have to embellish or improvise, though. Simply changing the tempo, or the volume can be enough. You can try a more staccato bouncy play-trough and then make it all run together in a soft lullaby version.
There are endless possibilities to keep things interesting!