Also, you could could use a mod like 'Martigen's Monster Mod' which simply replaces the few difficult monsters with many easier monsters (which also makes fights quicker and more intense). Also try to max your 'endurance' skill, as this greatly increases your health, and your 'willpower' will increase the fatigue you have, aswell as the regenration speed of your magika (thus you can cast more spells more quickly and also run / shoot / block for longer with it losing its effectiveness)