Is it time to just quit?

Hey Elizabeth. Ive been in a similar situation before. When I was low on funds I would reposition my speakers or change the acoustics of the room or move my listening chair closer or farther. Or try cheap tweaks. When I get in a funk I realize I'm critiquing my stereo and trying to be a perfectionist and not listening to the music. When I was 10 I remember the joy music gave me on my first stereo. A $5 AM transistor radio. Now I have built a stereo over the last 46 years that's 10,000 times the cost. Since being out of work from surgery for 5 months I listened to tons of music. So much that I'm a little tired. I just started back to work this week. Maybe its a time to unplug from all music for a week from any sources and start a little fresh with music you haven't heard in a while. I'm also well aware of my moods and when I lose interest in music thats the first sign I'm depressed. For me with the stress of the holidays and with the possibility of SAD it can be a downer. However I always feel great each autumn for about a month and music is beautiful!! Not trying to be nosy in your personal affairs. Your love of music will come back 
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Last night I got into the moving things around rut. Moved listening position around a bit. Each time it was like "oh, that's better" but after a couple or more moves I realized it was just different. Primarily the sound stage, nothing else changed really. Then I thought about charting the sound stage on paper for each position. But then, after moving back to my original position I realized that none of the changes improved my enjoyment of the music even though they did change the sound stage. That's when I knew I was listening to my system and not the music.

So I sat back, in the original position (which I had deemed to be best just a month ago), closed my eyes, sipped some coffee and enjoyed the music. The system vanished and it was great.

That’s why I oft say trial and error can only get you so far. It’s worse than trying to find a needle in a haystack. The best you can possibly hope for at the end of the day is something you can live with but certainly not the best possible sound. The trial and error method is like trying to solve three simultaneous equations in four or five unknowns. Notice I’m not (rpt not) saying don’t use your ears. But do it in a methodical way.

The only reliable and most effective way to deal with speaker placement and or room acoustics treatment placement is using the speaker placement track on the XLO Test CD or similar test CD. HINT most speakers are placed too far apart, the thinking being that produces the best soundstage. The ideal speaker locations are of course speaker and room dependent, but generally speakers should be closer together, not farther apart. Start off with say, four or five feet apart and work slowly outward, using the TEST CD.

I have had my speakers in approximately the same position for many years. When I got a new (better) DAC i was using a great recording to dial in the location. This entailed slight movements of only a few inches, slight angle adjustments. Still within the average placement of my previous Magnepans. Now I have the spot written down (so I can move them and get them back quickly) 18" (touching edge from side walls. inner (tweeter) edge 42" from back wall, outer edge 58.5" from back wall. I did move them two inches father from the side walls a few months ago.. a few recordings just had too much separation. (The two inches did not harm the ones that were fine with the old wider spread.)                  
IMO sometime it pays to try something new. Sometimes the grass is green right where things are.