There's nothing that does not grow light,
through habit and familiarity,
putting up with little cares,
I'll train myself to bear with great adversity.
There is a very precious, useful instruction in that. Pema Chodron advises using traffic jams, long lines, and other little inconveniences to train oneself. It seems to really make daily life more bearable when you think of these things as opportunities rather than hardships.