I play guitar. I’m not very good and I will go for months without even picking one up. However, every once in a while I get this inspiration to pick one up again. Initially, my finger tips get sore and tender and warn me not to play the guitar any more. But I know that if I just hang in there for a while my finger tips will become calloused and the pain and discomfort will leave. The calloused finger no longer warns against guitars.