Hi Mike,
I don't think it would be normal for anyone to maintain a constant enthusium for anything over a period of time and not eventually 'hit the wall'. I enjoy DIY stuff around the house and remember I went full bore for the 1st few yrs and managed to achieve a lot with much satisfaction. Health issues and other aspects outside my control suddenly dampened my enthusiam and drive.
I still do DIY stuff around the house, but do it gradually with breaks in between to fit committments with family and friends. Like you I don't do things 1/2 baked and can get obsessive about it.
At the end of the day I guess what I'm saying is tackle things in moderation, don't take it too seriously (it is afterall a hobby) and don't feel guilty not bringing out the gear even when the conditions are right. The stars, galaxies etc aren't going to disappear anytime soon

.
My scope hasn't even arrived yet for me to start doing visual observing and sometimes I think what have I done.

However when it arrives I know I'll enjoy it, but more importantly I'm not going to commit myself in getting it out every 2nd night and spending hrs at a time. Instead, I'll just do it gradually.
Maybe consider ocassionally going to really dark skies and spending a couple of relaxing nights with the family may rekindle your spirits again

.
Bring the scope, but maybe try to keep it simple.

Sometimes when you haven't done something for awhile and then get back into it, the fun begins again.
Good Luck,
Norm