Time is the most important thing. Other animals may not have a clock as we humans do, but they surely have a natural cycle through which they go through.
Nobody can go back and get back the time once it is passed. So investing on the things that matters to you can be of a great importance. Spending time with your loved ones can always be good. Do not ever spend time with somebody who is just pulling you down or who doesn’t value your time. Things are going to be important in the long run.