I am curious as to what your experience with Ritalin was in the past. I found Ritalin helped me immensely with mood/motivation.
Something I do daily to get my chores done is play music on Alexa. It is the only way I can motivate myself. I play a little Cars or Genesis and I feel like a teenager again. Chores are done easy peasy😊
At other times, I use a timer. That way I know that my focus will be on one thing until the timer goes off and it won’t last forever.
Another trick is 30 minutes of exercise to raise dopamine levels and a nice snack of fat and protein to raise serotonin levels.
Hope that helps