Mechanics is in large part - skill in adapting and acquiring.
Adapting as in using the tools at your disposal, sometimes creatively, often times not, to perform one-off procedures.
Acquiring as in buying and/or collecting several variations of the same tool. As illustrated in this thread, more than one variation of a simple 27mm socket was needed to remove a relatively simple steering wheel nut. Congrats, sugarwood, for your new collection of 27mm sockets. Join the crowd. We all have similar stories.
At some future time, if that particular size socket is misplaced or long-ago loaned out, an equivalent tool will avoid tearing apart your garage you just rearranged in search of it. One of the basic laws of nature is that small and large inanimate objects will often go missing, only to reappear days or weeks later in plain sight where you originally left it. Having two or more of everything truly helps avoid the anguish.
Thus, a seasoned tech or DIY will have several drawers containing variations of straight and Phillips screwdrivers, several variations of 10mm and 13mm wrenches, several socket sets, ratchets and extensions in 1/4, 3/8 and 1/2" drive formats, umpteen hammers, pliers, etc. (we should discuss the minimum air tools needed in another thread).
In addition, the serious DIYer will accumulate a large number of "never-to-be-used" tools over one's lifetime just because they were included in a set, or they were particularly shiny and/or hi-tech, so you bought it. Not to worry. You'll eventually need one of them before you die. A friend of mine actually collects tools. He calls them "backups". You can too. At last count he has 20 backup corded and cordless drill motors. He's truly sick, like many of you here. You know who you are.
A basic tool kit suffices for most basic maintenance procedures. You know - the 72-piece, "all you'd ever need" tool kit from HF, Sams' Club or Walmart in it's own uber-organized plastic case. Acquiring an extra hammer then provides a valid reason to acquire a pro-type tool chest.
Missing that 13mm double square socket or need a special tool? Uh oh. Rather than beating yourself up, the workpiece, your kids or SO due to frustration, it's always (usually) more satisfying as well as more efficient to have the right tool for the task at hand. Unfortunately, there are lots of "right tools" for many tasks, all better and shinier than your original starter set. This is never a problem for a true car guy (aka tool hoarder) and a large tool storage box.... or several.
Sherwood