Journalling as a spiritual practice is 
foundational to my evolution. 

I write, but you can also journal through
audio recording, art, music or creativity. 

It's a time of reflection of what is going
on and where I am going. It helps me observe
pattern and often help resolve issues. When 
my mind is filled with tension, emotions,
concerns and unfinished situations, journaling
or reflecting can help alleviate this. 

There is journaling, which can be anything, 
but is often a listing of event in the day, 
then there is reflecting, which use part of
journaling, with the added use of keeping a
process going.  Journaling and reflecting
can also be used to keep a log of my practice. 

I'll often keep a dream journal, separated from
my normal journal. Swami Sivanada or Rishikesh
used to say to keep multiple note book going. 
Some for reflections, some for likita japa 
(the writing of mantra) and some others I 
can't remember now. 

In Karma Yoga, or the yoga of action 
(see karma yoga in the garden) reflection is
a big part of the process. Karma Yoga is 
often translated as selfless service, but 
I'd rather see it as the yoga of action. 
Any actions can be used as a yoga, your work, 
your interaction, your entertainment. 
Your whole life can become a testing ground
for your own spiritual development. 
That exploration is not complete without
the help of a dayli reflection.