Everybody they have some sentiments to start their works. Without Follow these types of sentiments they feel uneasy. Some people follow numbers, for example one person like 2, he believe 2 is lucky number to him and he starts any work related to 2.
If we look other side some people believes on days, they feel Monday is lucky or some people believe Friday, somebody Thursday etc.., and some people believe in Colours and they believe specific colour is lucky for him/her.
So many people believe on God and they start their work with the name of God.