When I started studying at university there was this guy who was in his last year, had only half a year to go, and then decided to quit. I didn't understand it at all. Six years later I did. I quit. I regret it.

I regret not getting the proper support. And I regret rejecting the support I got. I thought I will manage, and I still do, but... All those stories about Gates and Jobs and whoever dropped out and became a famous bazillionaire - most of us who drop out don't. My salary is OK, but certainly not great. If I look at what people earn after finishing university, that's a significant gap with what I get - even now.

If you don't pass your exams this year, try again next year. Maybe after ten or twenty years you'll look back and think that you would have managed without that diploma, but if it happens to be that you look back in regret - it won't be easy to take up your study and finish the exam. You won't have the time and energy. Why? Your job! It takes up most of your time and energy, and hopefully there will be a family - wife and kids, and they take up most of the rest.

If you were certain that you would be successful without diploma, you would already have a running business.