I agree with the sentiment that emotional self-control is desirable, but hard to maintain. Few are zen masters who can consciously decide to feel emotion - the rest of us are somewhere between toddler and where we'd like to be. Media consumption should always be objective-driven. You read/watch because you want to learn something, want to laugh, need inspiration, whatever. Consumption of anything when there is not a need to consume it is wasteful, irritating, and frustrating. Find the ideas you need right now and consume only them. Otherwise we're the equivalent of channel surfing couch potatoes, just seeking something easy to do.
If I had made different life choices - let go of the consumerist values I was raised with and accepted more investment risk - I could have retired in my 30s. Instead, it might be close to 50. I could mourn those "lost" years*, or I could look forward to inevitably becoming a millionaire.
The glass is always both half full and half empty, but the only relevant thing about a glass is that it contains some water to drink!
*This is dark sarcasm. I spent those years indulging in luxury. We all did. Compared to most people in the world, we live like kings. I remind myself of my good fortune, mock my whininess, and slap myself back into mission mode when I go the pout route.