Here are 10 tips for achieving money, peace, and happiness as a web development agency owner:

1. Focus on value, not price. Provide services that bring real value to clients rather than competing on being the cheapest. This attracts better clients.

2. Build recurring revenue streams. Offer ongoing services like hosting, maintenance, training etc. This provides predictable income.

3. Systemize and document processes. Create SOPs, checklists etc. to streamline operations. This frees up time and mental bandwidth. 

4. Hire carefully and invest in your team. Surround yourself with skilled, reliable people you trust. Pay them well and help them grow. This reduces stress.

5. Scope projects properly. Avoid underbidding jobs or making unrealistic promises. Manage client expectations upfront to prevent frustration.

6. Learn to say no. Turn down clients or projects that are a bad fit. Don't overload yourself for the sake of money. Protect your peace. 

7. Take time off and detach. Make sure to schedule vacations, staycations and digital detox days. Downtime fuels creativity and productivity.

8. Maintain work-life balance. Have boundaries around work hours and be present with family. Don't let business consume your whole life.

9. Pursue mastery. Keep learning and improving your skills rather than passive comfort. Mastery brings meaning and satisfaction.

10. Give back meaningfully. Volunteer, donate to causes, mentor others. Focusing on positive impact boosts happiness.