The Personal Belief started when people stopped feeling inclined to believe what they were told they should. Years ago people in Ireland were mostly born into Christian families and were expected to believe the same as everyone else did. But eventually many people did not feel like this and no longer felt afraid to question their religion and are no longer willing to follow a religion just because other people tell them to do so. Although there is no format for the personal belief, many people share a similar creed. The main difference is that each person sees themselves as an individual with individual beliefs even though they might share these beliefs with thousands of others.
Death is a sad time.
Even if you don't believe in god it is important to remember the person in a special way. Most religions do have a ceremony to help the living remember the dead person, but you can always remember them in your own special way.