Try new things, step out of your comfort zone, take risks, do things in ways you've never done them before, ask for help, surround yourself with self-actualized people, become obsessed with the fact that you have one go-round on this planet as the you that is you, and realize how precious and important it is not to squander that.
When you use words loosely, without care and consideration, you erode trust in yourself and in what you're saying. When you squander words, you diminish your power.
Don't squander beautiful moments by always trying to snap the perfect picture or record the event on film. Sometimes it's better to watch things as they happen with your own eyes, knowing that the memory of the experience will always be with you.
I'm not ridiculously wealthy, but I don't squander money either.
If you run a business, if you are responsible for a lot of people, you come to grips with the reality that you have to have discipline. You have to protect the enterprise in order to take care of the employees. So, therefore, you can't be wasteful. You can't squander things, or you jeopardize other people.
I don't play the lottery, as I feel I have been really lucky in what I have been able to do in my life, but if I did win, it would be the usual things - helping out the people I love. I'd probably squander a few quid on all sorts of unnecessary crap!
We have responsibilities for others, not just across space but across time. We have responsibilities to people who came before us. They left us a world of institutions, ideas or possibilities for which we, in turn, owe them something. One of the things we owe them is not to squander them.