...The thing is I've done all quests and I've been everywhere there is to go. Most of my skills are at 100...
First and foremost, avoid having one character who does everything.
I always run 4 different builds . Each has a purpose and each is enjoyable for different reasons. Though no one character will do and see everything, I get to experience the entire game through each.
Note: These are base types, though not locked in to hamper oneself:
1.
Male Nord Tracker/Cartographer. He lives off the land and doesn't do a single quest. Not one. Wears Light Armour and wields a 1H Axe and Bow. He also utilizes a torch for blocking. Simply roleplaying as a bystander in the province, occasionally helping a local met on the roads, charting the province as he goes. Has a penchant for freeing any and all prisoners seen, then smiting the escorts, no matter who.
LOVE that guy.
2.
Male Bosmer Rascal/Fisherman. He's my rogue type, wearing only clothing and dual-wielding daggers. Good at heart but can't keep his mits off all those shiny baubles strewn about the world.
*Note: He recently drowned under the ice...I don't want to talk about it*3.
Female Breton Seeker/Healer. Working her way around the Holds, studiously making her own charts of ingredient locales. She's my Mage build focusing on Restoration and Alchemy. With only enchanted robes and clothing, a dagger rests on the hip for times when those with ill-intent come too close.
4.
Female Redguard Vindictor. This lass has a chip the size of Ysgramor on her shoulder. She's working the main storyline with nary a minute to stop and take names. My tank build, but only wearing Steel Plate and wielding a 2H blade. She'll most likely join the Companions at some point. Undecided on that.
It's YOUR game, so play it as you choose.
I choose to limit my characters based on questlines.
Sparse out the duties and interests and you'll always have a character ready to suit your current mood.
One person's opinion.