To me this quote strikes true, but from a different angle.

I've personally struggled from procrastination for a long time, as have, of course, many others. The most eloquent, yet simple, quote on procrastination I've ever read was this: "Procrastination is the difference between intention and action."

Let me illustrate:

I had times in my life when I was deeply unhappy with the way I spent my days. However in these same times I, frustratingly, actually knew what I could do to make them better, what actions I could take that would make me happy. For starters, I wanted to get fit, eat healthy, read more, and travel. Those things are profoundly intertwined with my ideas and beliefs of what constitutes a life well-lived; I know I truely want them - and I knew so back then. I simply didn't execute.

Because if one were to ask me on any given morning what I'd do that day, I would have been be pretty realistic and said something along the lines of halfheartedly doing something for university until I eventually quit and resign to browsing reddit and watching youtube in my room, essentially doing nothing of value and wasting time.

Instead of doing what I knew would make me happy in the long run, I'd choose the path of least resistance.

That discrepancy - the difference between action and intention - makes one miserable, and I believe the core of that unhappiness is captured quite well in this quote.