I think "doing less" is one of the options we tend to overlook; we get trapped in the belief that we "must" cope with whatever workload we have... and to simply say "this is TOO much!" is some kind of admission of failure, as human beings.

I've rewired my mind to make sure that i'd replaced "this is too much" with "i'm fine" and all of a sudden it makes my head feel lighter and the workload doesn't seem at all that hard. Whenever negativity overwhelms me I firstly clear my head and fill my head with positivity and only then would I succeed.