How can I remain steadfast in religion and return to it after a relapse?

It is advised to fear Allah, to remember Him frequently, to be mindful of Him, and to repent to Him. For the one who repents from a sin is like one who has no sin. Allah forgives all sins and transforms evil deeds into good ones for whoever repents, believes, and does righteous deeds. What helps one remain steadfast is seeking Allah's help, accompanying the righteous, staying away from the wicked, and attending beneficial lessons and admonitions.