Now we never knew you had a soppy side, ha ha!
actually, given the revealed context it's a very sweet song and much the better for really being about your kids and you, not Joe Strummer. (Although Joe was a loss indeed). Your kids will like this, as it's touching without being overly sentimental, and has a gently comforting and inspirational message that's quite understated, and probably very much like you.
Good job finishing it off properly, a worthwhile bit of work!
I liked the softer tone to your voice and the organ main chord riff and then it's little spotlight section are great and help capture the songs reflective mood really well. All in all a really lovely song. But let's hope you've got a few years in you yet before this song becomes your user name and crashes your own funeral.
So no misadventures on this holiday you're going on, no rock climbing or swimming in rough seas. Have a great time though!