Generally speaking, overspending refers to spending more money than one can afford or more than was planned. Overspending can stem from various factors that may be within or outside of your control. Common causes of overspending within one's control include underestimating expenses, mismanaging cash flow, and not planning adequately for future expenses. External factors, such as rising inflation and high-interest rates on loans or credit cards, can also contribute to overspending. 

This article by Credit Canada explains how to study your spending habits, recognize patterns and triggers and how to enforce coping mechanisms. 

Watch this webinar by Credit Canada on What to do when your mental health is impacting your finances.