My minecraft controls are messed up?

So Basically I can't pick up blocks in my inventory with the regular left clicking! If I don't set down a block it goes back to its original spot. Also I can't quick craft, so basically the 64 stack of wood I have takes forever to make into wood planks. Lastly I can't quickly get items from chests. (imagine me in a survival games!) Please help. I want the regular controls back! (also I have tried changing the controls and it didn't work.

Maybe your shift key is broken.
Try taking they key off and see if there's anything under it causing it not to click.
That's all I could think it could be.