All inquiries about material things and conveniences in this life stem from the greed of human beings, and desire is like drinking saltwater; the more you drink, the thirstier you become. The more you wish for something, the more likely you are to suffer.
Wishing is when you hope for things that have not yet arrived, that do not exist, that are not enough. Living in that mindset makes it difficult to feel complete joy in the present, with what you already have. Regrets about the past and waiting for the future are the main causes of inner suffering in each person. Meanwhile, only the present is real.
Thus, the only way to make us feel happy is to be content with what we have and to replace joy derived from ownership with joy that comes from a spiritual perspective.