My hobby is doing photos of rock bands. I have a lot of fun with it but actually I trained at University using film and I used to be a pro.
The nice thing about a DSLR is that it does not cost you anything to take pictures. It no longer costs a week's pay to experiment.
So, the route to improvement is to take lots of pictures. What sort of mental block do you have? Take pictures of anything and everything. No matter how surreal or ill-lit, it's not going to cost you anything to try it so just hit the button.
Study other people's photographic work in a critical manner.
What do you like about it? What do you hate? Why? Think about your responses and take it from there.
Accept that you can't be a genius all the time. Some shots will flop. Can't win them all. Shrug and move on!