I've been studying attention for several years now, and this statement ('The quality of your attention determines the quality of your life') has become my north star. My entire thesis for practicing attentioneering. Here's why I believe it's true.
Your attention is a filter. Every moment, you're bombarded with information, thoughts, feelings, impulses. What you focus on (whether by choice or by force) becomes your reality. The things you attend to register as targets in your brain and shape your behaviour. Everything else fades into background noise.
That's why two people can sit in the same room, experience the same events, yet have completely different days. One notices the annoyances nad frustrations and the things going wrong. The other sees opportunities, moments of beauty, reasons to be grateful. It's the same external reality, but very different internal experience.
I've said this before too: Concentration really is the bedrock of everything meaningful. You can't read deeply, listen fully, learn effectively, or connect authentically without the ability to direct and sustain your attention.
Most knowledge workers who struggle to be productive think they have time management problems. I think they actually have attention management problems. You could have all the time in the world, but if your attention is fragmented, constantly hijacked by notifications and impulses, that time becomes worthless.
William James wrote way back in 1890, "My experience is what I agree to attend to." Today's neuroscience confirms that attentional control directly influences well-being. Studies show that people who can sustain focus report higher life satisfaction and achievement.
Ok so attention is important. Critical. And yours sucks. So are you doomed? No! The other half of the Attentioneering thesis is that attention is a skill. And like any skill, it can be trained. Every time you bring your wandering mind back to the present task, you're doing a mental rep. Every time you resist the pull of a distraction, you're building strength.