Otherwise, for a more natural effect, make paths with a different kind of mulch than what is used in the planting beds or use tiny pebbles. You can also lay a flagstone walkway yourself quite easily using concrete filler or soil between the stones. For a delightful surprise plant whooly thyme in the cracks so that you smell the herb as you walk down the path. Embellish your garden with things that have meaning to you. If you collect angels, collect a few pretty pieces of angel statuary.
Nothing calms the nerves as much as the tranquility of water in the garden.
From a simple birdbath to the wild rushing of water down a waterfall, water adds an element that cannot be duplicated. Cater to wildlife. Share your sanctuary with whatever creature might take up residence in your garden. Encourage wild birds with an abundance of bird seed and by planting certain berry bushes. They love corn though many times they might raid the bird feeders in addition to the corn you set out for them.