I am ten days away from nineteen consecutive months of 100% sobriety. Thus, I can totally relate to what you're talking about.
For me, it boils down to simplification. Confine your thoughts to the present and you will cease to worry. Concentrate solely on what's in front of you. Treat each day as if it were a separate, life. And then maximize that day to its fullest. Especially when you decide to rest. If you do this, when you look back over a twelve month stretch, it'll feel like you lived two years, not one.
Finally, at the end of each day, call it to an account in your mind. What virtues have you acquired and/or strengthened? What sins have you vanquished and/or weakened? What have you learned? What do you need to let go of? Each day, make a concentrated effort to nurture that which you want to grow, and starve that which you want to die.
Hope this helps
