There'll always be naysayers and people who want to put you down. I've had people tell me I'm too old and I am not even thirty yet.
You've always got to look for the bright side and reach for your goals.
There's plenty of evidence of 'older' pilots getting that first job on this board, others and even that ITV series.
Qualifying at 39 means you have a potential 26 year career ahead of you. That's not something to sniff at. Even at the 'national airlines' you could still become a WB captain in that time.