[Jtsummers]

Identify points to automate. Automate them. Get the automation peer reviewed by the team. Establish testing for the automation. Deploy the automation.

If it's one-offs and not consistent misbehavior that the above can deal with, improve testing infrastructure. If you're unable to hit your feature development schedule, point to the problems in the present system and infrastructure.

Ask your boss for clear priorities: Do they want a stable system, or more features. If the present system is this unstable, then more features will only exarcibate this. If they say they want both, and give them equal priority, ask for a pay raise and search for new jobs.