People often can't stick to their plans because life is full of surprises. Unexpected events, like health problems or emergencies, can pop up and throw everything off track. Sometimes, work or family needs come first, and plans have to be put on hold. Even the weather can mess up travel or outdoor activities. These unforeseen circumstances make it hard to always follow through with plans.

Sometimes, people can't follow their plans because they lose motivation or discipline. It's easy to get distracted by things like social media or other technology. Procrastination is another big issue; putting things off can lead to missed deadlines and incomplete tasks. Without strong discipline, it's tough to stay on track and stick to plans.

People's plans often change because their priorities shift. As they grow and experience new things, their goals might change. New opportunities can come up, leading them in a different direction. Personal growth and advice from others can also influence their decisions, causing them to reevaluate and alter their plans.