"La razón por la que no paso mucho tiempo planeando o preocupándome es porque es como tratar de matar una mosca con un mazo."

Simplified Meaning:

Imagine you see a fly buzzing around your house. Instead of using a small flyswatter, you try to use a huge, heavy sledgehammer to get rid of it. This would not only be silly and ineffective but could also cause a lot of unnecessary damage to your home. The quote is saying that overthinking or worrying too much about small problems is like using the sledgehammer – it's an overreaction. Instead, it's better to stay calm and handle things in a simple, straightforward way. For example, think about deciding what to wear to a casual outing. Spending hours picking out the perfect outfit or worrying too much about how you look can stress you out and waste time. Just picking something comfortable quickly achieves the same goal without the hassle. So, the advice here is to keep things simple and not overcomplicate situations by investing too much time and energy into unnecessary worry or elaborate plans. This way, life becomes easier and less stressful.