I think when we truly start to live fully is when we stop obsessing over ourselves and our own petty problems and we start to look outwards. Looking outwards is the appreciation of the free things the Lord has provided us & given us dominion over. Taking a moment to thank the Lord as we look at his beautiful creation out our window. When we stop focusing on filling our lives with "things" and start focusing on pleasing God and ministering to the Lost that is when we truly start to live fully. Plugging in a praise & worship cd and praying all the way to town for the lost souls who I know, this is living fully... spending time with my boys teaching them or just playing car or just appreciating their smell after a bath, this is living fully. Loving my husband and trying to be (but failing) a wife of nobel charactor this is living fully. I may not be an overseas missionary or a televangelist but I can live fully for the Lord in the place where I am. For me living fully is planting my garden and reflecting on this hobby of mine and how it was a necessity to life for my grandmother. My garden is where I truly shine in living fully... I sing praises to the Lord in a broken voice cause thats what he gave me. & thankfully there are no neighbours to hear or I wouldnt sing. I suppose fullness of life has nothing to do with the house we live in, the car we drive or the things we accumulate. Fullness of life is the receiving of Gods grace in Christ Jesus and living in his grace that those around us cant help but see our light shine in the fullness of the Lord. Fullness of life is knowing that even in our deepest trials & concerns the Lord has us in hand. My son's school bus was rear ended by a semi transport truck. Probably the most stressful day of my life... that night a rainbow appeared on our property, starting on one property peg & ending on the other. i took pictures & they are in my profile. Fullness of life is acknowledging the Lord in the miracles that he gives us. I took my dad to church shortly after my mom died... fullness of life was watching his eyes well up in tears as the pastor preached an unconventional message about the sit com cheers (you wanna go where everyone knows your name) and the choir performed the song stand by me. I've never seen a message b4 like that or after. You see these were my dad's favorite song & sitcom... no I didnt set it up... the Lord set it up. My dad chose to ignore the fullness of life and has forgotten those tears. The fullness of life is knowing that when I put my dad's soul in the Lords hands he will be faithful and continually soften his heart until he receives his salvation. I suppose fullness of life truly began for me when I received the Lord and every bad thing i ever did was delivered of me in an instant and those bad things within me were replaced by a care and concern for all the lost souls in my life that they might know that amazing grace... for it truly is amazing. Living fully is about living life for God & others and when you do this suddenly you find... the self that needs fullfilling is overflowing with Gods grace.
dont know if this will help but this is my take on it.