Endurance training

I've always been one to be more spontaneous and impulsive to a certain extent. Improvising has often been a welcomed challenge. However, I'm at a point in my life that I don't have the energy to improvise, but my organizational skills are still not where they need to be to make up for it.
A lot of good things are going on, but there is just so much to be done and it's been more challenging than I had anticipated. I feel I'm running a marathon without the athletic advantage.
So in a way, I feel very out of sorts, and out of balance.