How do we obtain an indulgence?

Those seeking indulgences may apply them to oneself or to the souls of the deceased, but they cannot be applied to other persons living on earth.

It is necessary that the person seeking the indulgence be Catholic, and not excommunicated or in schism, minimally at the time the indulgenced work is completed, and
Have the interior disposition of complete detachment from sin, even venial sin;
Have sacramentally confessed their sins;
Receive the Holy Eucharist (in Holy Mass or Communion Service);
Pray for the intentions of the Supreme Pontiff.

It is appropriate, but not necessary, that the sacramental Confession and especially Holy Communion and the prayer for the Pope's intentions take place on the same day that the indulgenced work is performed; but it is sufficient that these sacred rites and prayers be carried out within several days (about 20) before or after the indulgenced act.

Prayer for the Pope's intentions is left to the choice of the faithful, but an "Our Father" and a "Hail Mary" are suggested. One sacramental Confession suffices for several plenary indulgences, but a separate Holy Communion and a separate prayer for the Holy Father's intentions are required for each plenary indulgence.