When should I retire? I'm tired.

I'm 65 + 10 months. My plan was to go part-time in the spring, but the company offered me an incentive to stay until mid-July. Mid-July my mom passed away. The company has been great with me taking time off to work to deal with my mom's stuff and placing my dad in Assisted Living. I'm just 'tired'. I don't have a lot of work to do. I had 'planned' to stay until the end of the year but I'm just not sure I can do it. I could ask to go part-time. I know everyone will ask 'Do I have enough saved?'. Depends on what the market does. My husband will continue to work.

When should I pull the plug?