When you are on a path - any path - it is very easy to fall into the trap of wanting to go back to a previous, happier time. But you don't really want that - even if it was possible, why would you want to go back a few steps, and then re-live what you are currently living?
If you are unhappy where you are now, that's part of the Way. There are always ups and downs - all you need to do is accept that where you are now is the
furthest you have ever been, and keep going from here. There is no point in looking back, because you can only go forward from where you are. Even when you think you have gone back, you haven't -
you have gone through the lessons of the present to a feeling or state that you have experienced in the past. But you're different now, and you'll never experience it in the same way as you once did.
You can't fall. Even what looks like falling is actually a step up.
No matter who you are and what you're doing, you can't help but keep going :)