Last Event/Training in 2011 -- Am I Able to Start Over Again?

Was into SBR for a while, maybe 9-12 months or a little more.

Did a Sprint after about 8-9 weeks training, then couple months later another.
Then about 6 months total into Triathlon training ran the inaugural Augusta 70.3, and then rested a bit and trained a bit for a couple months after - then fell off the planet.

So, now about 5 years later, 5 years older, about 25-30 lbs. heavier again and at the ripe old age of 51 -- do I even dare start training again.

I've not committed to any events, or any set training schedule or even when I might show up at a gym, pool, or trail again or whether I'll get my old Felt S32 tuned up (I think that is what it is) ....I did at least just sign up for the Silver membership whilst the deal was still going.

So anyhow - we will see. My biggest motivation at this point is seeing my 70's something mother in critical care at the hospital, suffering from a stoke and multiple other health conditions brought on by an inactive and poor lifestyle.

I never want my wife, children and other loved ones to go through with me, what I'm currently going through.
So maybe, just maybe I'll attempt training again ...or maybe hopefully if I hang around with enough of the right "healthy lifestyle minded" people that something will rub off on me and I'll do something, if even just taking more walks.