Belief is a cognitive blunder in the evolution of mind.
When we believe something, which means it does not exist in reality. We expect it to be. We do not need to believe a fact. We believe in God, we believe in religion, we believe in this that.
When we are not certain about something, we develop a belief about the uncertainty to make it certain as per our convenience or as per our like.
Somebody believe in God, somebody do not believe in God. Both are believes. Both parties believe something. In reality, we do not know whether God exists or not.
In day today life, we have various believes about relationships, events, products we use. We believe soap could kill germs. We believe education will secure source of income. We believe good things will happen to good people, bad things will happen to bad people. We believe struggling for money, being middle class is a symptom of good nature.
We believe in savings is good. We believe spending is bad. We have a belief about money, we believe somebody is good and somebody is bad.
Without logic and without facts, we have many believes in life. We have to question our belief. Assume something and believe the assumption, this is the way our belief system develops.
Depend on logic and facts. When facts are not available, then have a belief as per your like but understand that it just a hypothesis. Be ready to remove your belief when facts available against your belief. Do not be adamant with your belief when facts are against it.