Here’s a pyramid.
The base is when you were born, the apex is when you’ll die. You have no choice but to climb the pyramid, through inexorable time.
The substance of the pyramid is your potential – what remains for you to achieve? As you climb, your potential will inevitably diminish; that’s the way pyramids work.
So think outside the pyramid. The higher you climb, the more you see. And maybe by breaking off chunks of rock and throwing them, you’ll be able to change what you see. (Sometimes they will bounce off other pyramids and come back.)
Of course, the worth of the climb will depend on how you do it. You can go up the craggy, rough-clad outside, which will be hard but will increase your field of vision and focus your choice of chunks to throw; or you can crawl up the narrow inside tunnels, which may be easier but you won’t see so much, except through the occasional passageway that might lead to the outside. Difficult to aim accurately through those though.
If you’ve chosen the outside path you can probably duck round a corner to a different route up (pyramids have four facets). And of course there are many forks and turns in those tunnels too.
Like the Pyramids of Giza, this metaphor is starting to crumble, so I’ll stop. For now.