Lifestyle habits are important when your skin is dull, aren't they?

Recently, my skin has looked dull overall, so I started reflecting on my lifestyle habits. I often stayed up late and I don't think I was drinking enough water. Since skin is said to be heavily influenced by daily habits, I plan to start by paying attention to my sleep time and hydration. At the same time, I am looking into skincare methods to improve my skin tone. Because I understand that treatment approaches for pigmentation concerns vary depending on skin condition, I want to make a decision after a consultation rather than choosing a procedure blindly. What precautions should I take when combining home care with professional dermatological treatments? I am also curious to know what daily habits those interested in skin tone management consider most important.