I LOVE that now that I'm a higher level, my enemies level with me. However, I have the Sanguine Rose and the guy it summons kicks so much ass for me I just follow him around looting the bodies. I'm going to change the difficulty of the game.
When my enemies started getting harder to fight and leveling with me, I used my perks in Heavy Armor (I will not give up my Ebony Mail), 1h and 2h as well as Destruction.
As your enemies get better, you must too.
My boyfriend plays the game and he wanted to level quickly so he found a cheat with speech, leveled that to 100 along with smithing and enchanting. I love watching his guy get PUNKED while mine has one strike and chops off a head.