Carrying out the thing, getting it to the point when one might say: There, now it is good - that point is hard to reach. Often, one sets very high goals for oneself. Perhaps too high.
“I juggle a lot of different balls and sometimes I don't know how I manage to keep them all up in the air, but I do!”
“I thus decided to leave the university forever and tried to find an industrial job in the United States.”