Fully agree with the above. Hand-fly regularly when workload permits, focusing on precision, striving to make each approach better than the last. Periodically review emergency procedures and associated SOPs, and if you can find a willing victim, do some SEPT (simulated emergency procedures training) and practice the callouts with someone from time to time. Good way to pass the time on long days when you're paired with someone who actually likes flying. On the ground between legs (or in extended cruise, or what not) is a great place do some occaisional study and review; already getting paid to be there, so why not make some of the down time useful instead of studying at home and wasting time off?
Outside of just drawing a real prick of a sim evaluator, stressful sim sessions are usually the result of day-to-day complacency or flying in a busy environment that is not conducive to being able to keep your physical skills sharp, and / or not devoting any regular time to procedural and checklist review. In other words being "out of practice" and "cramming" right before your ride ; no different than the academic side of things, really.
My personal experience, at least. Different for everyone, so take what works and ditch the rest. Aloha.