Thus each man ever flees himself.

But what good does it do him if he does not escape from himself? He constantly follows himself and oppresses himself as his own most irksome companion. Accordingly, we ought to know that what makes us struggle is the fault, not of our locations, but of ourselves: we are weak when anything has to be endured, and unable to bear toil or pleasure or ourselves or anything for any length of time. This is what has driven certain men to death, because by frequently changing their intentions they were constantly brought back to the same things and had left themselves no scope for novelty: they began to grow sick of life and the world itself, and their self-indulgent ways that sapped their vigor gave rise to the thought: ‘How long shall I put up with the same things?'

Lucius Seneca (c. 4 BC - AD 65)