Well narrated article and thanks the author for that.......

As per my experienced, yes limiting beliefs comes from the life we have lived...Our environment, circumference all are responsible for the negative thoughts or our belief.

One may try to do the meditation and go through the subconscious mind to analyze the past and understand the present.

Once we can able to stop fearing because of past or worrying for future, then life will be very peaceful and enjoying.

Thanking you @saswat036