You have been very enterprising. Running a music shop could be a lot of fun and a great way to meet musicians, but I appreciate it is hard work. My dad started playing classical guitar in his late 70s, but he is getting a little frustrated by his progress. I told him to find things to play that he enjoys. It does not have to be about exams. The best thing for any musician is to find others to play with and starting our local pub sessions is one of the best things I've done.