I suppose any hobby can make you fed up sometimes. Maybe think of taking a break from it. What I wouldn't do is sell my gear until I've had a loooooong lay off. Photography is the sort of hobby that you can easily get back in to (if you still have the gear).
JohnyT
Pretty much.
Take a break... stop trying so hard.... do something different.
Marriage kurtailed a lot of my photography; cost, time, hassle & grief... I got a little digi-compact about 2002 as I refused to spend seriouse money on something that at the time I deemed to have about as much optical quality as a 35mm disposeable film camera.....
I have been trying to scan my archive of old film for the last three years, and there is one folder of scanned negatives, that contains probably 1/3 of all the pics scanned so far called "Miscelaniouse Landscapes and other pretentiouse crap" That after scanning I have looked at and though "WHY on EARTH did I think that was worth a bit of silver halide!"
Conversely, looking through the folders of 'nasty digital' pics taken with the little compact since 2002.... I am constantly stunned by how many are actually quite good shots, and despite low resulotion are far more interesting and worth while than some of the pretentiouse crap I took with a fancy SLR.
I also have about 10,000 digi-snaps of bits of Land-Rover or old Motorbike, which I took to illustrate something I was doing mechanics wise to one of them for a forum post.... replicating the Haynes manuals kind of stuff, but showing stuff they dont tell you in the Haynes like how to 'cheat' fitting a ball-joint wiper seal onto a Land-Rover axle without splitting the steering swivil...... yeah... dont worry about it!
But daftly, pictures I would have never taken with the Film Camera becouse, well, the subject wasn't worth sticking on my wall, and it would have cost too much in film to take 30 photo's of how to chop a seal into two bits and squash it round a flange..... yet looking at THOSE... actually, they are probably the pictures in my collection more people have had any interest at looking at! Sad, twisted people who like old Land-Rovers and motorbikes and get all exited about rubber 'gaiters' admitedly.... but those people's interest spurred me to take more, and they have spurred more interest still etc etc...
And all taken NOT becouse I want to take photo's for thier own sake, but becouse I have had something 'interesting' to take a photograph of.
Going through the random folders of scans and snaps; putting them into collections, now.... Well, I have just updated a Face-Book Album of family Photo's having found another little stache of pictures from that set; photo's from my Grandparents Golden Wedding aniversary party in I think 1995, a boat trip down the River Avon. I took a lot of pictures that day, by the looks of it; about five films worth by the look of it! About 150 frames. an awful lot when you had to buy film! Family who are in them, can now glimpse them from wherever they are, of course, but the ones that people comment on are the ones with people in them, some-times a bit blurry, grab-shots, ones with tops of heads cut off, or edges of fingers in the way of the lens when one of the kids picked up a loose camera of something.... becouse they are 'interesting' and invoke a memory, or they have people in them that are now dead younger family members never met or whatever..... the pictures of stuff I took along the way? Ducks flying under the arch of a bridge; the bridge; the sunset... skipped over... no-one is really bothered, there's no 'direct' connection....
I think that people's expectations of a photo have changed a lot over the years, and that the pictureque and decorative is no longer so sought after. We get fantastic scenary piped into our homes on 99 channels of TV these days, we can bag an exotic holiday on a last minute booking, and experience it first hand, and we have cameras on on our telephones; and we are immured to pure asthetics to a greater degree. But personal interests remain.
So, give it a break, stop trying so hard; stop working on the interest of photography.... work on other interests... and maybe photo them.... and the enthusiasm will return.... if not? Well, you have a new interest!