I intend to get leaner on several fronts:

body: bodyweight reduction by 20 kg
server: rebuild on BSD instead of Linux and reduce number of services running
work computer: remove software and clean up structure
free time: replace casual browsing in the evenings with intentional projects

I learned in the past from experience with intermittent fasting that the best
results sometimes don't require you to spend more time, more money, more
whatever. They only require that you do nothing. No money, no time. 
There's a motto from the stoic school that I really like as a mental shortcut:
abstine et sustine

Abstain from things that are harmful, sustain the lack of things you're craving
for the sake of good that you're seeking. Often sustaining and abstaining are
just two sides of the same coin, such as when you're fasting. Sometimes, as in
the case of leaning out computer, they are different as you sustain discipline
and abstain from casual buildup of stuff. Actually, now that I think of it, they
are still the same thing. Abstain from undisciplined use, sustain the
disciplined one. Abstain from casual, sustain the intentional. Etc. 

Bloat, whatever it may touch, is the result of accumulation that is the result
of abstaining from clear, intentional, rational and disciplined effort and
sustained opposite over time. Bloat is that: accumulation of poor choices in
time.