A while ago i've learned how to make something called Longevity Potion, from my inner arcane teacher, Attentus. In many cases, it's not even potion despite name.
He inspired me. I've found the clue, then developed the details i won't disclose here.
I hope it will work better than his own, faulty. He still lived more than average human, but not without dramatic end (and tragic to some). His body crumbled to dust aging quickly in few days. He had mind and experience of old man, but body of young person till his death. He was wise and stupid at the same time. Giving so much for so little isn't very wise in my mind.
I've made modifications that will allow me to have children too.