Get into flying because you like the idea of leaving the ground, the sensation of being above the clouds, whatever reason you like but don't do it for the money, ever. If you make money that's great but don't expect to even if it's highly likely. That way you will never be disappointed when you make less than you thought you would. Treat it as a paid hobby if you find an employer and learn to carry on enjoying it. If you enjoy it you will do better.
As Scroggs says, if you think you can control the industry you are wrong. The only thing we can control is whether or not we enjoy it. Get out when you don't enjoy it any more. That goes for PPLs as well as CPLs. Have a plan B. Commercial pilots who find themselves in too deep and can't pull out (as the actress said to the bishop) are up the creek. Many will do anything for money. How the industry loves them.