Why does my toyota celica feel rough when i change gears?

i have a 2005 Toyota Celica GT hasn't given me any problems and i always do it's oil changes when needed but lately i've been noticing that when i move the handle to put it in DRIVE it feels hard like i have to use more force to move it and same goes for all the other gears. I tried moving it all the way down to LOW then back up and still it feels rough. Why could it be? how can it be fixed and is it bad any tips or suggestions are appreciatedWhy does my toyota celica feel rough when i change gears?
I'm pretty sure this can help!



http://www.popularmechanics.com/how_to_c



Since it's all your shifts, go to page 2 of the link I posted for you.

I have a Toyota Celica 1995. Mine is turning into a piece of crap.Why does my toyota celica feel rough when i change gears?
shifter probably full of dirt and goo. is it a console shifter? what got spilled down it?
the shift cable may need to be lubed or you spilled coffee with sugar in it or soda down in the console clean out the console