[Transmission] intermittent problem selecting gears

[denlingo]

I seem to be getting this happen to me now and again, one day I will have no problems and the next day it will be difficult getting it to go into gear? doesnt matter which gear I try and put it into as each one will be just as hard to select. I think the problem may be somewhere under where the actual gear stick is if that makes sense? at least it sounds and feels like thats where the problem is....

Anyone had this problem before or know what the cause is? its winding me up! I thought at first it was the gear linkage but am not so sure now