Oops..I lost my temper dammit

I'm a new first time cat owner who adopted a nice 1 year old male who
for the most part is very happy and contented but certainly likes to
push the limits. Not knowing better,I allowed the cat to roam mostly
wherever it wanted when it first came home but now he
wants to get in the way in the kitchen and that includes grabbing meat
or fish that is defrosting on the counter..I lost my temper last-night
when he grabbed some hamburger while I was out of the room..I ended up
slapping him and putting him in his carrier then putting him outside
for an hour..it was cold and I couldn't leave him any longer and I'm
not sure that will do any good anyway. I've tried putting sticky tape
down,spraying him and yelling NO when I catch him but to no
avail..somewhere I read I need to train ME..any suggestions.