Money as &quot;life energy&quot; approach helps me be thrifty, but my real struggle is how do I asses risk when I want to buy an asset. If I wanted to use $500 from my work to buy a share of SpaceX, does it provide a better return than any other investment at some acceptable risk ? I don&#x27;t see the life energy approach as helping this question but I need to read the book you recommend.<p>Note that SpaceX is not publically traded, but it represents assets I would like to own.