Just the muse of a question, if you had more than 600 years of life, what would you do with all that time?

Certain people of the bible lived quite a long time by today’s standard, Methuselah – 969, Jared – 962, Noah – 950, Adam – 930, and Enoch – 905 years, to name a few. Imagine you had that lifespan before you died what would you do with all of that time? I am leaving it totally to you but I will have barring any unforeseen illnesses, you would live the majority of that time in reasonably good health.