Ask yourself, “what would I do, right now, in this situation, if I was living in the best of all possible worlds?”
Your action will be an action of a person living in the best of all possible worlds, and as the echo of your action reverberates it will spread the quality of a best possible world around you.
Now think about how you usually act. What world do you usually believe yourself to be in? Are you surprised you are not living in the best of all possible worlds?
Can you agree that if everybody was acting as if they were living in the best of all possible worlds, then we would be living in that world? Can you also understand that if no one ever acts towards the goal of a best possible world we will not even be close?
Is it not then in your best interest to at least act as if the world were just a little bit better than you believed it to be? To give just a little more than your instincts tell you to? And to believe others to be just a little bit better than you believe them to be?
Yes, you may be fooled. They may take advantage of you. The risk exists.
But as you consider this also consider the risk you are taking by believing you live in a world worse than it really is, or giving less than your instincts tell you, or believing people to be just a little worser than they really are.
It is a cumulative development, and you are the one deciding if it should be cumulatively worse or cumulatively better. Trust me when I tell you this. In the end it adds up. It adds up tremendously. In fact, your life and your happiness depends on you making the right decision here and now.
This is not something you can save for later, or do once a Sunday now and then, this is something you have to do right now right here, because if you do not do it now, in this moment, why would you do it in any later moment?