How Many Calories Can I Eat?

I am able to determine my personal current calorie burn
because of my personal data that is now stored
in my computer software food journal, DietPower.

Every day, for the past  six and half  years
I've entered all my food-intake into that food journal.
I've also entered my morning weight each day.

The DietPower program has functions which allows me to see my diet history.
I can see this as a list; or I can see a day-to-day detailed accounting
of my food and nutrition; or I can easily access a summarized accounting,
for... the past week, the past month, the past quarter, or the past year.

Today, the program tells me that
my past year's average calorie intake was 1115 calories.
I can see the amount of my stabilized weight for one year ago,
....which is my Starting weight. for that one year time period....,
by looking at the list of my average weights during the week of one year ago;

I can see the amount of my current stabilized weight (stabilized meaning average)
...which is my Ending weight, for that one year time period....,
by looking at the list of my weights during this past week or so.
By subtracting my ending weight from my starting weight,
I can see exactly how much weight I lost or gained during that one year period.

So...since now I am the same weight that I was one year ago,
I know that the amount of calories that I ate this past year
is the number of calories it takes to keep my weight the same...
Therefore, I can see that my current calorie burn is approximately 1100 daily...
(as of this EXACT date, 1105 calories...but the next week or month...
this total could be a bit higher or a bit lower, so I rounded it to 1100.)

 Along the same line, another function that I find interesting about DietPower,
is that I can also access the program's calendar, and go back in time to a specific date...
and see exactly what I weighed and what I ate on that particular day.  

From that date, I can also access a summarized accounting for the week,
the month, the year prior to that exact date.
For example.....should I wish to do so.....I could revisit Christmas Day, 12/25/2008
and see exactly What and How Much food I ate on that day;
exactly what I weighed on that date; and access a summary of my calories
and nutritional data for the month or year prior to that specific date.

This personal data is valuable and motivating to me,
both my ongoing present data, as well as my past data,
and as I continue in my weight-loss/maintenance journey,
I continually find new things to do with it.
This helps me implement various behavior changes,
and has become an enjoyable hobby for me.

Since I've been doing this so long, and this Habit is so well-established for me,
my daily food and weight input into DietPower takes only a few minutes of my day.
The only lengthy periods of time are when I "play" with my past data
to accomplish some personal agenda.

Here's a recent video about my Weight-Loss History.