Core Difference

Self-discipline(சுய ஒழுக்கம்) is the long-term habit of consistently doing what moves you toward your goals, even when motivation is low.

Self-control(சுய கட்டுப்பாடு) is the moment-to-moment ability to resist an impulse, temptation, or distraction.

Think of self-discipline as the “training plan,” and self-control as the “split-second brake.”

Examples

Situation Self-Discipline Self-Control
Healthy eating Planning weekly meals and consistently preparing balanced lunches every day. Resisting the sudden urge to grab a donut when you smell fresh pastries.
Financial habits Following a budget month after month and regularly transferring money to savings. Saying “no” to an unplanned online purchase during a late-night browsing session.
Career development Sticking to a study schedule for a professional certification over six months. Avoiding the impulse to check social media during an important one-hour study block.

In short:

Self-discipline builds the structure, which means your ongoing routine.

Self-control provides the instant restraint when temptation appears.