When I joined an Australian airline as a very junior F/O some 46 yrs ago, a wise old DC3 Captain and ex WW2 Spitfire pilot said to me..." Son, let me tell you three things you should never forget if you want to have a successful airline career "...
1. Never forget to put the wheels down!
2. Never run out of fuel!
3. Never forget that the airline is NOT here to service the pax, rather, the pax are here to service the airline!
I can still feel his big hand on my puny shoulder all those years ago. How a big bugger like him fitted into a Spit I'll never know. He died a couple of weeks ago!
Keep his advice in mind and you should have a successful career!