Yes, I am currently doing something similar, mine is in regards to drawing. I always enjoyed art, but I lost interest and an ability to engage in it, throughout the years. It has only been in the last month that I have really gotten back into it. My challenges have been allowing myself to make mistakes, being fine with it and realising nothing bad will happen, which is extremely scary and hard. My task was to draw imperfect drawings- seems easy enough, but I had no idea how to begin to imagine deliberately drawing an imperfect picture. I struggled really badly with this task and as a result ended up giving up for a few days. I became really angry with myself because I couldn't make one tiny mistake. In the end I thought I had mastered imperfection but I had in fact continued with perfection. So my task is continuing and this time I basically have to draw something that is impossible for me to be perfect at. My progress so far is 0, I have been avoiding it! I have 10 days left until I have to hand it in, so we shall see how that goes!