This story has a strong premise and engaging personal voice, but there are a few areas where it could be polished to make it even better. Here are some suggestions:

Strengths:
Relatable Voice: The narrator’s candid tone and self-awareness make the character likable and easy to relate to, even if they’re flawed. This draws readers in and makes them want to root for the protagonist.
Clear Progression: The journey from frustration to finding a solution is logical and has a natural flow.
Engaging Ending: The "forty years later, still in business" line gives a sense of accomplishment and wraps up the story nicely.
Suggestions for Improvement:
Grammar and Sentence Flow:

The sentence "I’m wasn’t being smart" has a typo; "I’m" should be "I." This kind of slip can take readers out of the story.
Tighten some of the longer sentences. For example: "I’m actually quite intelligent, I just don’t take orders well, and I’m always telling people how much better what they are doing would go if they just tweaked it a bit" could be simplified: "I’m intelligent, but I don’t take orders well. I keep telling people their work would improve if they made a few tweaks."
Clarity of Events:

The transition from walking on the beach to starting a new business feels a little rushed. Expanding on the narrator’s thought process would strengthen the connection between these events.
The first client’s story could use more detail. Why did the client go bankrupt? Was it really the protagonist’s advice, or did the client misinterpret or overdo it? A clearer explanation would add depth and make the lesson learned more impactful.
Character Development:

While the narrator’s flaws are evident, showing moments of growth throughout the story would make the character arc more compelling. For example, what specific lessons did they learn from the failed first client?
Dialogue or Specific Interactions:

Adding a brief conversation with the first client could make their dynamic more vivid. For instance, show the client enthusiastically taking advice or panicking when things go wrong.
Ending Expansion:

The ending could touch more on what sustained the business for forty years. A hint of what the narrator improved over time would add a satisfying sense of closure.
Final Thoughts:
This piece has a lot of potential as a slice-of-life reflection. With some fine-tuning of pacing, grammar, and depth, it could become an even more engaging and insightful story.

WriterRick (WdC SuperPower Reviewers Group)

My review has been submitted for consideration in "Good Deeds Get CASH!" .