“Don’t worry I got this” is a dangerous phrase. The overconfidence effect is a cognitive bias that frequently leads to recordable incidents and a lot of near misses. The overconfidence effect has been studied extensively within the context of decision making and risk taking.
A well-known study asked drivers to compare the safety of their driving to the other drivers participating in the study. 88% indicated that they were safer than the average driver. 60% said that they think they are one of the top 20% in terms of driving safely. Clearly there is a disconnect between perceived ability and reality. This is the overconfidence effect and it can be deadly.