It’s OK to make a mistake and we all do it. The vast majority are not a big deal and are only an inconvenience for most of us. Other kinds of mistakes can be more significant, especially if you have responsibility for others. Most mistakes can be prevented by taking a moment to weigh the decision before it’s made and seriously consider what it may mean for the future. Jesus called it “counting the cost”.

“Suppose one of you wants to build a tower. Won’t you first sit down and estimate the cost to see if you have enough money to complete it? For if you lay the foundation and are not able to finish it, everyone who sees it will ridicule you, saying, ‘This person began to build and wasn’t able to finish’.” Luke 14:28
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There are mistakes and then MISTAKES of UNUSUAL SIZE (apologies to The Princess Bride), like these historical disasters:

Mistakes can be great teachers for us if we will only learn the lessons that come from them. Jesus said in Mt 11:19, “Wisdom is proved right by her deeds”, which means making right choices has a clearly visible good result for all to see! Conversely the results of mistakes are also plain to see. We all make mistakes, but If we have to make mistakes let’s learn from them.

6 Causes of Mistakes
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1) Inexperience- The vast majority of mistakes happen due to inexperience or a lack of knowledge. Most can be avoided by getting counsel or advice from ones who have done it before. Overconfidence can easily lead to reckless choices made.