Failure hurts. To put it mildly, it's a painful experience, one that many of us work tirelessly to avoid. Often, its effects can be long-lasting, leaving a mark in our minds, and creating a mental hurdle that can be difficult to overcome in later years.
If you've been frustrated with achieving your goals in the past and you've found bad habits getting in the way, try the micro-habit approach. Start small and build good habits over time, and watch as your momentum takes off.