[junto]

As a husband and father I struggle to put in a 37.5 hour week. Overtime is has to be traded off against seeing my children grow up and finding (literally) a few minutes a week alone with my wife.

Hence at 23 I think you should embrace longer work hours, as long as you also maintain a healthy social life in the balance.

'My company is my life' should be a red warning flag however, because for any number of foreseen and unforeseen reasons that company might not exist in the future.