I keep hoping that the next guitar I buy will make me play better - still hasn't worked but I'll keep trying ! 
There always seems to be that one song that sounds great on THAT guitar - and therefore I can't sell it. ( Especially true of my 12 string Fender acoustic)
The biggest drawback as far as I'm concerned is that why sell it- you will NEVER get the value for it that you paid. I went to guitar center to trade up - took my epiphone Les Paul which was a fantastic guitar - I wanted to buy a Telecaster - the were gonna give me $30 on the trade. I told them I 'd rather give it to one of my high school students for free rather than be embarrassed by that offer and walked out of the store . And I did - next day I gave it to a freshman in one of my classes that was beginning to play guitar.
JJJ - keep on keeping on !
remember these famous words of advice ....
"never sell your guitar for what you told your wife that you paid for it originally "
" you can always get another wife"
and lastly - here is an almost true made up story......
JJJ's favorite girl Chris told him he had to get rid of some guitars. Because he is a bit incapacitated of late with his vision issues, JJJ says why don't you bring into the living room half of my guitars and I will pick some out to sell. Chris says just a second and starts moving all the living room furniture into the "Great Room", where the guitars are stored. Lastly she leads JJJ into the same room. JJJ asks what are you doing ? Chris says - it was a whole lot easier to move you and the furniture than it was to move 1/2 of your guitars !!!
Your vision is not limited by what your eye can see, but what your mind can imagine.
Make your life count, and the world will be a better place because you tried.
"Use the talents you possess, for the woods would be very silent if no birds sang except only the the best." - Henry Van Dyke
