rejuvenated
To be rejuvenated is to feel like you are feeling better than you have in a long time. You might be rejuvenated because you have recovered from an illness, or you might be feeling rejuvenated because you are starting a new phase in your life.
She was feeling rejuvenated and excited about the new job.
After being away for a year, the couple was feeling rejuvenated and ready to start fresh.