Self-Discipline

noun a person who abstains, especially from indulgence in alcoholic beverages; a teetotaler

• The abstainer refused to partake in the wine tasting event.
• She's always been an abstainer when it comes to alcohol.
• He's a total abstainer when it comes to junk food.
• Being an abstainer from social media, she enjoyed a more peaceful and focused life.

noun the state or quality of being dedicated to a cause or activity

adjective committed (showing dedication or loyalty)

• The company values employees who show dedication and commitment to their work.
• If you want to succeed in this job, you have to show some serious commitment.
• You gotta be all in, no half-hearted commitment allowed.
• His commitment to the cause was like a burning flame that could not be extinguished.

noun a state of being unwilling to work or use energy; idleness

• Laziness is often seen as a hindrance to productivity in the workplace.
• I can't stand my brother's laziness when it comes to helping out with chores.
• Stop being so lazy and get off the couch!
• Procrastination is the cousin of laziness, so it's important to stay motivated and focused.

adjective describing a person who is determined and resolute in their beliefs or actions

• She is known for being a strong-willed leader who never backs down from a challenge.
• My sister is so strong-willed, once she sets her mind on something, there's no changing it.
• That girl is seriously strong-willed, she always gets what she wants.
• His strong-willed determination was like a force of nature, unstoppable and fierce.