When you say "cannot/can't" it means either you don't want to, or your don't know how. 
And if you don't know how, learn.
I heard someone say that the only reason people feel like they're "topped out" and stuck is because they're maxed out at their current level of thinking. Some people stop right there, because the pain of progressing to a higher level is greater than the pain of staying the way they are (in other words, they're thinking, "change sucks! I don't wanna do it!"). Until the scale is tipped so that the pain of staying the same becomes greater, people will continue to wallow in their own apathy and pity.
Of course there will be ups and downs, but as long as you keep going forward until those ups and downs slowly iron themselves out, that is what counts.
Your Entrepreneurial Success... Just Say YES!