A lot of persons are in the habit of always making excuses for every given task. They always have an explanation to why it didn't work, why they haven't finished a given task, why they can't go to school, why they failed an exam or failed at executing a project. The list goes on and on. This shouldn't be you.
There could be times when things didn't work out as planned or you couldn't get a job done in time but when it becomes habitual, people will begin to take you as unserious . Even when your excuses are genuine, they already think oh! He's like that.
People have doubts when they give you task. You are suddenly unreliable and predictable. Nobody gives you anything of importance to do. You keep asking for extension of deadlines. That's not excellent at all. That's setting up yourself for failure. Excuses are the bricks used to build a house of failure.
Start building character. Give yourself to discipline. Unlearn old bad habit of always making excuses and pick up better ones. Success is built on results and not excuses. But you say it's gonna take time. Yes! Give it time. Habits are not formed overnight. Habits are the result of repeated actions over time. However long it takes, work on a better you. Give time to training yourself correctly. That way, you'll become an excellent, reliable, prompt-to-do, dependable person and I'll be here to cheer you to your victory and success parade.