There are some things that it is better to begin than to refuse, even though the end may be dark. (Tolkien)
Sometimes we face difficulties or duties whose outcome we dread. I know what I should do, or even sometimes that I must do it, but I hem and haw and delay and avoid it because I foresee an end that will be unpleasant to me in some way or other. As Gandalf says in The Fellowship of the Ring, though:
Even the very wise cannot see all ends.
We fear ends and outcomes that we think are likely or certain to follow if we do the right thing, or do our duty, and so we get cold feet. We stall. Or we go forward in fear and trembling. But the truth is that we really don’t know the future at all, and so we cannot be certain about outcomes. Heck, sometimes we start a job only to find later on that it is not our part even to finish the thing, so that the end (whatever it was or is or will be) is nothing at all to dread. And often the outcomes are much better than fear made them out to be in our heads and expectations.
The right thing to do is the right thing to do, and leave the outcomes to fend for themselves. God is for us, and He makes all things work out for good to those who love Him. Fear not, and go forward, even if you must tremble as you go.