Choose your hard. It’s hard to start, continue, finish and fail. But if you don’t do the first three, you may have to settle for the last one.
Now we should get into the definition of fail, of course. It means different things to different people. Traditionally it means you did not succeed with your desired goal. Though it can be defined quite broadly. If you haven’t stopped trying then you may not have failed yet.
However, if there is a time limit, then if you’ve past the time allocated, you could say you failed. This is most accurate in a timed activity, project, match or game.
It’s not fun to think you failed at something. But you have only failed in the attempts up to now. Perhaps you will succeed on the next attempt!
Until then, it’s hard to fail. But it can be the only way to finally succeed.