Haha I'm finding that to be so true too. The only thing that stays the same for me is that its always changing. I've also found I'm never done with building my setup . I said to myself a month or more ago "I just need these last 2 or 3 bits and I'm done buying stuff for the grow." About 25 more purchases later I'm learning I'll never be done. It is fun though, I don't think I've learned so much in such a short space of time with anything else I've ever done. Finally found something that doesn't feel like work to do and I love it.
Such a great thing, to nurture tiny little seeds into 1st class medicine and sticking it to the 'big man' in the process.
As long as you are enjoying your plants you can't ask for more .
I've seen some good yields come from friend's NL grows so you may be surprised yet