Here are many Bible verses about self-control.

But hospitable, a lover of good, self-controlled, upright, holy, and disciplined.- Titus 1:8

For God gave us a spirit not of fear but of power and love and self-control.- 2 Timothy 1:7

The end of all things is at hand; therefore be self-controlled and sober-minded for the sake of your prayers.- 1 Peter 4:7

But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control; against such things there is no law.- Galatians 5:22-23

For this very reason, make every effort to supplement your faith with virtue, and virtue with knowledge, and knowledge with self-control, and self-control with steadfastness, and steadfastness with godliness,- 2 Peter 1:5-6

Likewise, urge the younger men to be self-controlled.- Titus 2:6

But I discipline my body and keep it under control, lest after preaching to others I myself should be disqualified.- 1 Corinthians 9:27

Be sober-minded; be watchful. Your adversary the devil prowls around like a roaring lion, seeking someone to devour. -1 Peter 5:8

For the grace of God has appeared, bringing salvation for all people, training us to renounce ungodliness and worldly passions, and to live self-controlled, upright, and godly lives in the present age,- Titus 2:11-12

Every athlete exercises self-control in all things. They do it to receive a perishable wreath, but we an imperishable.- 1 Corinthians 9:25

Know this, my beloved brothers: let every person be quick to hear, slow to speak, slow to anger;- James 1:19