There are lots of important things in life without which we can't live. Few things are those that are important for everyone and no one can afford to leave those behind in their life.
At any cost, one has to get those in their life. For example , cloths that is something universally accepted important thing to live on this planet. That is a very basic example of common necessary important thing of your life.
From short to long , white to black , traditional to western , but we all wear some or the other dress in our life.
Now the second category of important things are those that do not imply to each and everyone but to only those who themselves imply it.
For example changing clothes thrice a day or wearing one cloth only once. It can be reused but as it is not in your dictionary you don't even use cloths after wearing them once.
But no one in this world can say that something is important by everyone and something is important by few. Universal acceptance is not our duty and what we think is important for ourselves is what we should not leave.
Thank you