Thanks everyone for the comments. I went on a long hike yesterday and had a good talking with myself and came up with the following thoughts: 1) As Lazy Spartan mentioned, it's "later than I think" and I probably only have 30 good years left (which is consistent with an online life expectancy calculator I did recently); 2) I sat under a big shade tree and ran some reasonable worse case scenarios on my calculator (and in my spreadsheets when I got home). Even spending 2.5 times what I expect, I still won't run out of money, even if I live past age 87; 3) I have a lot to do if I want to retire soon and I need to develop a schedule.
So, when I got home, I sat down and wrote up a schedule for myself. I've done really well up till this point (sold my house, got rid of 98% of my stuff, downsized to an apartment, etc.), but realize I hadn't made firm plans past this (in my defense, I thought it would take many more months before the house sold, based on previous attempts to sell it, and all that consumed my time until now). The plan includes things like visiting areas on my list of possible places to live, talking to realtors, looking at RV's, making final decision on house, apartment, condo, RV, etc. Getting medical checkups and anything that needs to be done now, etc. It's given me a direction to go forward along with dates I need to hit, which is what I think I've been missing.
I'll post back here when I start implementing some of these actions. Thanks again; I can't over emphasis how valuable all your comments have been!