Humans put too much emphasis on the wrong things. Dogs live in the Now only. They don’t plan, scheme, aspire, wish for anything.
If right now is warm and snuggly with their Human or Humans, then their world is perfect, and they revel in it and show their happiness.
If something bad just happened, they face it stoically, because they can’t foresee or predict the future. This too shall pass, is their philosophy. And inevitably, it does.
Humans sure could learn a thing or two from dogs. Living in the Now, is a good place to start.