The beauty about life is that it gives us the opportunity to retrace our steps should we step out of line. Admittedly, not in all instances do we get to hit rewind. Yet for those stuck in the misery loop we can always backtrack to times where we experienced true joy and associate ourselves with that feeling.
If I were to evaluate my current status I think the word for it will be 'Been better'. There are times where I look at much happier times in the past and I can't help but long for a reliving of those memories. Of course, I'll rather not daydream and be stuck in fantasy mode, but these are feelings and experiences I've once lives out which means to me that they can be relieved with the right actions and under the right circumstances.
The question of going back though is perhaps not appropriate. It is a lot better to consider forging ahead with the future. The goal is to take actions that deliver results or feelings that were similar to those previously experienced. It is the way we retrace our steps as adults and it calls for deliberate steps, discipline and dedication towards the desired results.
Of course if we long for an experience, feeling or result we once had, we can never discount the time factor that is taken. There's simply no replacement to getting It right the first time. However, being brave enough to pursue second chances is something that we must do when the present feels lost.