All combat positions involve a high amount of stress. Tank Commanders are no exception. In addition to the stress of constantly being a major target for enemy troops, Tank Commanders also have to consistently perform well, making split-second decisions that can (and will) affect the outcome of battle. In addition, a Tank Commander is responsible for the lives and well being of their crews. One miscalculation and your friends and co-workers can end up buried in tons of mangled steel.
There’s also the impact that a Tank Commander’s actions has on the rest of their platoon or on other soldiers in battle. Hundreds or thousands of lives might depend on the decisions made inside of a single tank and any misstep will have to be answered for with a Commander’s superiors. There are more stressful jobs, but they usually involve juggling chainsaws.