Its a really difficult experience and its so hard too
But you really have to move forward because thats all you could do
Keep working
Keep fighting
Then work on your research so you can always get Better project
Sometimes people get discouraged and lost the enthusiasm to work after waiting for long without any meaningful result to show for it.
Research cannot give you 100% guarantee of a successful work done. It can only reduce the risk. Some have done research, yet it seems nothing has been done.
Well, we do not need to give up. The higher we go, the better we become.