I'm not telling you to figure it out for yourself. I'm telling you to do it yourself. Your reply to RR makes it sound to me like it's all about attitude and no training plan is going to fix that. You want it to be fun, you have to make it be fun.

I find it fun to keep my HR in my zone. It beeps at me when I go out of the zone. It's a game to see how fast I can get the beep off. But you don't want to wear your HR monitor.

MP is right, you have to figure out exactly what you want.

V.