Don't spend your remaining days thinking about other people unless it serves some common good. When you focus on others, it pulls you away from better work. Stop thinking about what this person is doing and why. Stop wondering what they say, think, or plan. These curiosities make you drift away from watching over the rational, ruling part of yourself.
Spend not the remnant of thy days in thoughts and fancies concerning other men, when it is not in relation to some common good, when by it thou art hindered from some other better work. That is, spend not thy time in thinking, what such a man doth, and to what end: what he saith, and what he thinks, and what he is about, and such other things or curiosities, which make a man to rove and wander from the care and observation of that part of himself, which is rational, and overruling.