That reminds me a little of me right now.
When I learned how to play, I thought it would be SO COOL to be able to do every shot existing in tennis! Once I was able to do topspin FH/BHs, I asked my friend to show me how to slice. From that point on I did nothing but slices. Once I thought I was good at slices, I started looking up how to do spin serves... I learned the slice, then the topspin-slice, then the kick, and now the twist. Then I watch Prince of Tennis and that opens up a whole other slew of potential shots that I HAD to learn... Buggy whip shot. Tweener. Twist spin groundstrokes. ETC.
I felt so accomplished, until senior year started and I suddenly realized through experience, that I may have everything... but at the same time I have NOTHING. I would literally be able to pull off any shot you could ask me to do, and if I couldn't do it, I'd spend the next whatever long days researching on the internet, how to do it until I could. While I spent my time broadening my repertoire of shots, my friends spent their time sharpening the few they had... and as a result, they are much, much stronger than me. I may be able to win random points here and there due to trickery and flashy shots that are unexpected, they are able to win the majority of points with their skill. I'm just a weak 3.5-4.0ish player, and really I should be working on strengthening my basic shots rather than seeking out the complicated shots that I shouldn't even be using.
For you, maybe you could have somebody drill you. Let them just feed ball after ball to you at net, work on your volleys. They should start becoming comfortable and very fluid at a point, which is when you can say you're getting quite proficient. Work on everything piece by piece... That's my opinion, at least..