Knowing your seat...
Ive been a good co-pilot for many years and now I'm a Captain on a LJ45 for an extremely wealthy African corporate. I've paid my dues - contract work: UNWFP, ICRC, DHL and airline experience on B737's.
My co-pilot and only colleague on our one aircraft is very difficult to work with. He's got about a third of my experience in hours, but in career about a tenth. ie in Africa he's very lucky to be where he is and good for him! But unfortunately it has gone straight to his head.
The result is that he causes conflict on the flight deck with the most bizarre issues! I've been very diplomatic so far (10 months), but with reasonable boundaries and real effort to try and help him along.
He doesn't respond well to criticism, but unfortunately the time has come now to crack the whip.
Any constructive suggestions?