It's never Too Late To Change Things but...
 

If you have many people you love that depend on you then you are fucked.
May be 'fucked' is not a word, but say you realized that there is no drive anymore in the things you do, but you still have to bring income for 4+ people, what's the scenario?

Find something that drives you and makes money at the same time.

Although I've never really believed that you have to totally love your job. It helps, you bet. But it's not necessary or even all that realistic. Love your life after work when you go home to your family or friends or whatever. Job allows you to do the things that you really do love.

I've known a lot of people that have wandered and wandered, looking for that perfect job that they absolutely loved and also made good money. Everyone of them has been completely miserable. Then I've known a lot of people that just do their job well, get paid, then they go home to do the things that they really do love. Not so miserable.

I love Fedex Truck driver work it seems. Im stressed I guess.