Teddy,
Going into the retirement mode was a difficult change for me, too. I retired from full time work in mid 2006 - I was 58 and took the entire next year to compose myself and think up things that I wanted to do next. Of course, my church organist position has always kept my weekends busy as well as one rehearsal night with the choirs.
So I've been there ... and felt much of the same frustrations that you are going through now ... We get in that work rut, and after so many years of going going going and going, it's hard to put the brakes on and stop or slow down.
A year after retirement, I started working in a Thrift [Charity] shop checking out electronics, TV's, and doing minor repairs on furniture and such. Now, 7 years later, I'm still doing work for that charity shop, but most of the work is done at home now - I took on the financial stuff (reconciling the daily drawers, preparing bank deposits, created an Excel spreadsheet for financial reports, etc), so I'm in the store on a daily basis, usually at closing time.
So, between my church position and doing the financial stuff for that store ... and ... doing the house chores and projects that come with home ownership, I keep busy enough, but still have loads of "off" time to do whatever I want to do. I also take a daily nap in the afternoons now too ... and I get up in time to prepare dinner for the wife who is still working full time. She is set to retire in a year or two, something that I'm really looking forward to.
So, just relax a bit .. I know it's really difficult to do, but you've earned the time off and retirement is another way of life that does take getting used to.
Lars A ♫