Earning more and spending more, The money mindset cycle.

Hey, I am a weight loss coach who recently got more 5 clients and started earning more in my business. It’s exciting to think I created this and to actually be getting closer to my 2 mil per month income goals. Since my income increase, I have been having a lot of thoughts about spending. Am I spending too much, should I make this investment, will I lose all my new money and be back at square 1? I have done a model on spending and came up with the thought the more I spend the more I earn. But I feel like I need more boundaries and limits for myself to protect my new income. My question is how do I spend with less guilt and worry while staying financially disciplined.