Truck dieing carb problem how to fix?

[chevymadness]

My truck keeps dieing like i cant even drive it anymore first it was dieing at stop signs.And i had to put gas even while i was changing gears so it wouldnt die i had to constantly give it juice.I baught the truck months ago.But now its gotten so bad that even when i park it in front of the house it just stalls.My mechanic said we got to clean up the carb and replace spark plugs possibly.Something like that i hate this carb.What should i do in this case of a bad carb?