Just a few thoughts

There's absolutes and then there's percentages.  And very often,  it's viewing things through the prism of the latter that provides perspective.  Take the case of your expenses.  Something that's material as a proportion of your income is something you keep track of   something you monitor,  try to save on/ optimize. You could do the same considering it as a fraction of your wealth instead. Now if its something that's non material as a proportion of your income/ wealth , you really wouldn't be losing much sleep over it ( unless it's a really frequent expense)- would you for example think too much about a one off expense of a few hundred bucks if your monthly income runs into a few lakhs.  Probably not.  Atleast one shouldn't :) Ditto for a company,  instead of an individual.  If you are looking at cost heads to optimize,  you are looking at the material recurring ones.  Same holds true let's say in investments.  Unles...

People say life is unpredictable.  That's both true and it also isn't. Life can be quite predictable a lot of times too. There's a lot of non linearity in life but interspersed,  there's a lot of linearity too, especially on shorter time scales. Its easy to predict what you will do tomorrow based on what you are doing today, most of the times. The predictable parts of life,  are usually,  under your locus of control There's another aspect to it though.  The unpredictability and non linearity can be either positive or negative-- but the two are not quite symmetric.  How often are you positively really really surprised, in ways totally not predictable (in ways big and small ) ?  The happy things in life  I suspect, are usually predictable or atleast plannnable though vice versa is not true.  Ofcourse you can get lucky.  But you need to actively put yourself in a position where you can get lucky.  You cannot win a lottery without buyin...