1. Lack of Market Research: Not thoroughly understanding the target audience and market demand. 2. Ignoring Feedback: Failing to listen to customer feedback and adapt accordingly. 3. Poor Financial Planning: Mismanaging funds and underestimating expenses. 4. Team Misalignment: Not having a cohesive team with aligned goals and vision. 5. Premature Scaling: Expanding too quickly before establishing a solid foundation. 6. Overlooking Marketing: Neglecting to invest in effective marketing strategies. 7. Weak Differentiation: Failing to distinguish the startup from competitors. 8. Neglecting Legal Matters: Ignoring important legal and regulatory requirements. 9. Lack of Agility: Inability to pivot and adapt to changing market conditions. 10. Founder Burnout: Overworking without proper self-care and balance.