One of the things that I really love about running and racing is that I am in control of it. So many things in life are unpredictable but I get to choose what I want to do for my workout and how I want to race. And what makes a "sucessfull" race is following the plan that you have set for yourself according to your circumstances right now.
The other thing I like is that things change and evolve and I get to evolve with them. And you should too. It's sounds like you are coming to that thought and I hope you can be happy with that. A little bit of pressure it good but pressure that causes pain and stress should be avoided.
Don't worry about repetition....I do laundry and dishes everyday!
Have you ever tried water running. I haven't, but I wonder if that is a viable option for you at this point.
Oh, I swam yesterday and rode 45 miles today. Weekly total 100-ish bike miles and 23 running miles and two swimming miles. I feel beat up!