When I was first starting out in the HVAC Industry as a new technician, it was a common joke at my first company that you could tell the longer a technician had been in the industry by looking at his tool bag. The joke was that while newbie technicians such as me had a tool bag loaded with tools, the veteran technicians had a mostly empty and worn bag that had a few things here and there in it. Granted, I learned a lot from the senior technicians at that company, but I did not carry that habit with me. If you want to do a job correctly, then you must have the correct tools.