Howard, when I was a younger, as a beginner player, I always liked to play better players. It seemed like I could learn from watching them. It's always better to watch somebody that plays better than it is to watch somebody that plays worse.
After a layoff, your english will be a little rusty, and your mechanics might be a little off. The best way to come back is to try to practice working on your englishes on the cue-ball. That would probably be the best place to start. As time goes on, you will start getting more solid hits on the cue-ball. You should probably put in 3 or 4 or more hours a day to get yourself sharpened up. Maybe, in about a week, you might see your old self coming back.
When playing a good player, you must get in there and take it from him. Don't be waiting for him to give it you. When practicing, pretend you're playing him. And all the mistakes that you make when practicing, this is the time to sharpen them up.
When warming up, practice those difficult shots that you were missing. So the next time you play a good player, you will recognize those shots that you are having a hard time with and hopefully you will correct the shots that you were missing.