ENTREPRENEURS SHOULD PICK A NUMBER that marks enough. The Donald Trump Disease is not knowing when to stop accumulating wealth and forgetting to live a rich life. Do the math on the back of an envelope about your needs and wants, pick a number and stick to it. When you hit that number, stop the manic quest and start to live. I know numerous people who have lost their way and forgotten that money is only a means to an end, not an end in itself (as long as you understand what that end is).