If our goal is something important, then we can power our way through the struggles as we learn the way and obstacles that either block our path or even temporarily push us backwards.
Even when it seems we are getting nowhere, we are always becoming better, fitter, more knowledgeable etc.
Then we are likely to make what seems initially like a huge leap, but with hindsight, you see that you were always getting better, and it was actually a natural next step from where you were.
Is it worth the struggle? For me, it was. I am a fitter and happier person now.
Only you can decide whether what you want is worth the effort. But going into it with an understanding of the effort required will help keep you going during the most difficult times.