It's my fault!

You've done nothing wrong.
No-one can.
I just feel bad.
And I have to do something about that.
So, when I make a mistake, and feel bad
I make amends.
Otherwise the bad feeling persists.

Forgive yourself - release guilt and blame.

Guilt and blame are not helpful.
Except as indicators that the past (an old habit?) still has a hold on you.
Feeling good right now, every new moment, is all that matters.
Anything motivated by, or resulting in, guilt or blame is wrong. Don't do it!
Be responsible.
Accountable for all your actions.
Therein lies freedom - freedom to choose who and how you are!

Is this a habit? Is it healthy?

Habits aren't necessarily 'bad'.
Some are 'good'.
E.g. thinking 'good feeling' thoughts.
Think your 'best' thought (about what you're eating, and the consequences)
And you won't go far 'wrong'.
Boy! What a lot of ''''''!
But you know what I mean, yeah?

Is truth a feeling?

Feelings alone are rarely enough to determ-IN-e truth.
We use our minds to interpret our feelings and what we consider to be true.
"This just doesn't feel right!"
Yet, sometimes, it's OK to act on nothing other than intuition.
If we're proved 'wrong', so be it.
We can make amends - to others and to our model of the world.
Learn-IN-g from our IN-tuition is a great experience.