All sadhana is preparation

All sadhana is preparation,
That is, it is the work towards creating the conditions,
For the opening to happen,
And for the bounty of life to be received.

In my understanding,

Karma = Work/Effort/Sadhana that leads you towards or further into bondage/illusion.
Kriya = Work/Effort/Sadhana that leads you towards liberation/freedom.

Expansion and Contraction

Expansion and Contraction,
Is the constant pulse of life.
The heart is expanding-contracting,
The lungs are expanding-contracting,
The pulse at your nerves is expanding-contracting,
The digestive system peristalsis is constantly pumping,
i.e. expanding-contracting,

Even at the subtle layers,
Your mind also expands and contracts,
Your emotion also expands and contracts,
Wakefulness also expands and contracts,
Really life and death are the grandest expansions and contractions.

The better you are at releasing trapped stuff,
The more you can take in, in the next cycle.

Different masters have different kriyas or techniques for this purpose.
For instance:
# Osho’s Dynamic Meditation
# Sadhguru’s Shambhavi Mahamudra Kriya
# Sri Sri Ravishankar’s Sudarshana Kriya
And so on.
Journaling/Writing is an excellent way too.

We all need to purge things from our lives that do not serve us anymore.
The idea is to keep the flow going.
Empty yourself fully, to receive fully again.
And this dance goes on,
Carrying you through evolution itself.