My advice would be: rigorously eliminate everything from your life which doesn't fit inside your top X critical priorities. Where X is as small as possible, and seek to cull it further by combining equivalents and trying to identify why some 'important' things might actually be utter wastes of time in the first place. The world generally uses a ratchet approach to conquer your attention. Use a ratchet to take it back…
that sounds like a depressing existence
Or be an Epicurean and enjoy the neutral state most, pleasures but not at the expense of pain.
Or be a Stoic and find comfort in realizing you aren't invading Russia in the winter.