An 89-year-old neighbor waters her Christmas tree every day with boiling water. By February (February?), her tree is sprouting new growth.
Although boiling water sounds extreme, the theory is that trees stop absorbing water because the pores of the stump become clogged with resin. Boiling water melts the resin, and thereby increases absorption.
In dark times, our own minds can become clogged with sticky thoughts that stress our mind and our body. The first step toward unclogging these sticky thoughts is simply mindfulness. Go ahead and write that thought down, because otherwise the mind is very slippery. Look at that thought. Does it meet the Buddha's qualifications for Right Speech? Is that thought true? useful? beneficial?
Is that thought true? Is it really, really true? Is it so true that you would stake your life on it?
Ask yourself: How does truth feel?
Truth feels like "Ahhh." "Yes." "Of course." Truth relaxes the sticky thoughts that are gumming up the mind. Truth brings peace to the mind and calmness to the body. Out of that tranquility springs the tender green shoots of creativity and kindness toward yourself.