Hi I have two staff who don't get on and are required to work together. One of them is very skilled and the other thinks they are skilled but in reality just "thinks" they are and are lazy. (has been heard saying they don't bother with a lot of stuff to other staff members) They do enough to stay just out of capability ... The problem is that this has now had a negative impact on the strong member of staff who is becoming very disheartened, losing their love for the job and I am afraid may leave. Any advice?