Inspire yourself by to attending a summer music camp for adults. All but one of my students has come home enthused and on fire from the experiences. Hanging out and practicing in the company of other adult enthusiasts and professional musicians will help keep the passion and commitment alive. I've five students already signed up to the Aebersold Workshop.
Here is a partial list.
There are many more.
BTW: I've been attending as a drummer for many years in both the USA and Italy. I'm planning another summer road trip to do just that again.
You've got to learn your instrument. Then, you practice, practice, practice. And then, when you finally get up there on the bandstand, forget all that and just wail.
I'm a professional pianist and music educator in West Toronto Ontario. I'm also a devoted percussionist and drum teacher.