Zachary Crofton, a 17th century Puritan minister, provides ten steps for those who want to repent of their sin and turn to God:

1. Sit with care, constancy and conscience under the word of truth and gospel of grace
2. Study the nature of God…acquaint yourself with His attributes – His holiness, power, justice, mercy, etc.  Your souls will never be drawn from sin, or driven into a course of true repentance until God becomes your dread
3. Sit close to the work of self-scrutiny…The worst of men, by a short conference with their own soul, would see the necessity of repentance
4. Hold the world loosely…those who are truly repentant are pilgrims on earth
5. See the brevity of life…Hopes of a long life, and thoughts of repenting later in life, help many a soul to hell
6. Seriously expect approaching judgment
7. Seriously apprehend the possibility…of pardon…it is a certainty if received with a prostrate soul, and asked for by serious repentance
8. Soak the heart in the blood of Jesus – take every turn of meditation to daily contemplate the cross of Christ
9. Speed will facilitate repentance – Linger not in what you will give up; for the longer you linger, the harder it will become
10. Plead earnestly for repentance at the hands of God

“We sinners cannot change our own hearts, but we can employ means of grace (e.g., spiritual disciplines) through which God changes the heart.  A new penitent habit of heart will be proof positive that in and through Christ you have passed from death to life.” – JI Packer

Source: JI Packer (A Quest for Godliness)