Faith
We go to the gym regularly to better our health. If we only went once a month or so, would that make a difference? Nope!
So, just as we must exercise to have better health, we must exercise our Faith. Huh? What does that involve?
Well, first you have to want to pray and ask for self-discipline. So, think about that.. are you really going to seek God each day? It's not a one time thing. Every day, ask the Holy Spirit to lead you.
It is important to understand that self-control is a work of the Holy Spirit, not a work of the individual. After all, Galatians 5:22-23 lists the fruit of the Spirit, not the fruit of the Christian. As we are merely the branches upon which the Vine (Christ) hangs the fruit He produces (John 15:1-8), it is the indwelling presence of the Holy Spirit that gives Christians the power and ability to exercise self-control so that we will not be mastered by the “cravings of sinful man.” As Paul said, “God did not give us a Spirit of timidity, but a Spirit of power, of love and of self-discipline” (2 Timothy 1:7). Indeed, Christians are controlled not by the sinful nature, but by the Holy Spirit (Romans 8:9), who helps us in our weakness (v.26), which makes us able to say “no” to sin. -https://www.gotquestions.org/Bible-self-discipline.html