Common barriers to maintaining a healthy lifestyle include lack of time, motivation, and access to resources. Busy schedules often make it challenging to fit in regular exercise or prepare nutritious meals. Additionally, individuals may struggle with knowledge about healthy choices or face environmental factors like limited access to parks or gyms. Psychological barriers, such as stress or body image issues, can also impede progress. To overcome these obstacles, establishing clear goals, creating a supportive environment, and seeking social support can be effective strategies.