It’s obvious to me that any long-term physical or emotional pain I’ve endured was caused by my own unwillingness to endure short-term inconvenience or discomfort.
Discomfort could manifest in obvious ways like sacrificing long-term health through a lack of proper fitness, neglecting nutrition; or less obvious ways like avoiding uncomfortable but necessary conversations.
Being negligent and making excuses for what you know you should do today just make tomorrow more difficult. The opposite is also true. Slight inconvenience today, more gratifying tomorrow.