Our brain is not designed to create happiness, as much as we wish it were so. Our brain evolved to promote survival. You can end up with a lot of unhappy chemicals in your quest to stimulate the happy ones, especially near the end of a stressful workday.
THE SOUL-UTION!Date yourself. Take yourself out to eat. Don't share your popcorn at the movies with anyone. Stroll around an art museum alone. Fall in love with canvases. Fall in love with yourself. Not interested in dating anymore.