How to train an excited Labrador ?

I have a 1 year old male Labrador named Mojo and a 2 year old male Tibetan Mastiff Leo. The problem with Mojo is that he gets distracted very easily and has the problem of barking for attention. People say that just ignore the dog but my family is disturbed when Mojo barks for long(which happens when I turn my back). I use clicker to train. I am just 13 year old but still can train pretty well. Please help me out with this one...