Do activities you're passionate about - which make your heart and soul feel perky - including things like working out, cooking, painting, writing, yoga, hiking, walking, swimming, being in nature, being around art, or reading inspiring books.
The pocket square, properly contrived, finishes a man's look. With good tailoring and well chosen neckwear, the look connotes power, taste, refinement, manners. The naked pocket connotes the opposite: working class, tasteless, base, crude, ignorant.