Here's what I've done for Si:
I think maybe Se is short term memory and Si is long term memory, but I'm not sure. My long term memory is ok.
Getting into a routine is hard, and getting out of a routine is hard. I park in the same places, so then I can always find the car (actually I always can anyway, it's just easy if I don't have to think about it). I study at the same time in the same place every day, with some variation (like in the library, but in one of several places in it). I've worked into my schedule doing laundry and watering the plants on Sundays. In these ways I've been able to keep a routine for awhile. In the past I've been pretty terrible at it. I keep a planner with all my major obligations and all my assignments, and write down reminders for everything I have to do. Writing things down helps a lot. If I didn't I'd be useless.
Paying attention to my body has been a bit of a challenge, but it's worth it. It just takes a continued effort, kind of like meditation. It helps me be aware of my emotions and general well-being; also making an effort to exercise helps a lot.
I don't know if this is what you are looking for, but this is my experience with Si issues. What things do you have difficulty with?