EPTHonest, 3 rax>exp>more rax is the strongest build TvP. Get your stim and conc shells out quick, just pump MM and continue to pressure. Pop into the protoss' expansion, avoid chokes, try to poke in to kite zealots without getting trapped with FFs. There will be a window where you can push into the Protoss and do some damage. You really just need to be careful you don't get caught in a choke where he can cut off your army and remove your mobility.
Drops are also a good option... if you can distract him with your army at his front and drop in the back at the same time, you can generally pick off a key structure or a lot of probes.
Again, we need replays in order to get a good understanding of why you're losing.
