To cultivate, literally, means to run a tool through the earth to loosen it, so air, water, and nutrients can penetrate the soil and improve it. This year I want to cultivate my life as if it were a garden. I want to pull some weeds, tidy up the planting beds, and clip off the dead leaves and branches to leave room for new growth.
Another meaning of cultivate is to encourage, as in cultivating a hobby by spending time researching and practicing it. This year I want to cultivate my interests. I want to learn more about some things, and practice others to improve my skills.
Cultivate is an active verb. It's something I can do.