How to develop self-discipline ?

As you put it, self-discipline isn't so much a matter of "mind tricks”. Tricking oneself into doing something might be a quick fix, a diversion, or an easy way out of doing something else. Instead, I consider self-discipline to be a long-term endeavor.

What are some successful methods for developing self-control?

1. Improve your ability to concentrate

Leading a self-disciplined life, like any other form of lifestyle, begins when you wake up in the morning. That's when you decide how you'll spend the next 12–16 hours of your life. You can choose to react, which means getting out of bed, getting your phone, and checking your emails, Twitter, or Instagram. You can be watching the news and become engrossed in foreign events over which you have little control. Alternatively, you may take calls or respond to text messages that your friends begin sending you while you're eating breakfast. Get proactive by teaching your brain to be focused as soon as you wake up if you want to create a different start to your day.

Begin each day by asking yourself, "What is the one thing I am committed to accomplishing today?". Make a note of it.

It should be written in large characters on a sheet of paper and hung on the wall of your bedroom or bathroom. Read it aloud when you begin your day, such as when brushing your teeth. Come up with a quick response and say it out loud. Then, as a follow-up, take action and direct your attention toward it.

2. Optimize your mornings for important work

A self-disciplined life can be described in a variety of ways, but one of them isn't being spontaneous in how you go about your day. There's time for whimsy, and then there's time to get things done. To put it another way, it's all about timing.

Being self-disciplined entails prioritizing your hard work over your leisure activities. It implies that you are aware of when you should devote your time to hard work and when you should devote your time to pleasure and socializing.

Make the most of your mornings by making it a habit to get your work done first thing in the morning. This entails utilizing your circadian rhythm to the fullest extent possible.

Most people find that conducting deep work that demands a lot of focus is best done in the early morning hours. Moreover, the brain's peak performance occurs between 2-4 hours after we get up. If you get up at 6 am, your peak hours will be between 8 and 10 am.

Working early permits your brain to fully concentrate on the task at hand.