How do I build a habit that actually sticks long term?

The most reliable way to build a lasting habit is to attach it to something you already do consistently, a technique called habit stacking. For example, after you pour your morning coffee, you meditate for two minutes. The existing behavior acts as a trigger so you don't rely on motivation or memory. Start smaller than feels meaningful. Most people fail because they begin too ambitiously and quit when life gets busy. Two minutes of exercise beats zero minutes every time, and consistency matters far more than intensity early on. Track your streak visually, because not breaking the chain becomes its own motivation. When you miss a day, the rule is never miss twice. Missing once is an accident, missing twice is starting a new habit of not doing it.