Prior to making private vows (evangelical counsels) I consulted a Catholic priest theologian to confirm for myself that The Lord would grant all the necessary Graces to help me to keep these vows realizing I was totally helpless without God. He confirmed that The Lord would grant these Graces without fail. Thus, if one is depending on the Graces of God, and not one’s own abilities alone, to keep a vow or vows, it is not any sort of pride or boast. It could be viewed, in fact, (for one only) as a witness and testimony to God’s Loving Mercy, His Kindness and Gratuitiousness and His Graces.
A private vows or vow are a vow to God (serious matter) and are not to be entered into lightly to my mind, and one will consult a spiritual director prior to making this move. See Canons 1196 and 1197 below re dispensation from a private vow. Certainly, The Church views private vows as sufficiently serious to cover them in Canon Law.
vatican.va/archive/ENG1104/__P4E.HTM
TITLE V.
A VOW AND AN OATH (Cann. 1191 - 1204)
CHAPTER I.
A VOW
Can. 1191 §1. A vow, that is, a deliberate and free promise made to God about a possible and better good, must be fulfilled by reason of the virtue of religion.
§2. Unless they are prohibited by law, all who possess suitable use of reason are capable of making a vow.
§3. A vow made out of grave and unjust fear or malice is null by the law itself.
Can. 1192 §1. A vow is public if a legitimate superior accepts it in the name of the Church; otherwise, it is private.
§2. A vow is solemn if the Church has recognized it as such; otherwise, it is simple.
§3. A vow is personal if the person making the vow promises an action; real if the person making the vow promises some thing; mixed if it shares the nature of a personal and a real vow.
Can. 1193 By its nature a vow obliges only the person who makes it.
Can. 1194 A vow ceases by the lapse of the time designated to fulfill the obligation, by a substantial change of the matter promised, by the absence of a condition on which the vow depends, by the absence of the purpose of the vow, by dispensation, or by commutation.
Can. 1195 The person who has power over the matter of the vow can suspend the obligation of the vow for as long a time as the fulfillment of the vow brings disadvantage to that person.
Can. 1196 In addition to the Roman Pontiff, the following can dispense from private vows for a just cause provided that a dispensation does not injure a right acquired by others:
1/ the local ordinary and the pastor with regard to all their subjects and even travelers;
2/ the superior of a religious institute or society of apostolic life if it is clerical and of pontifical right with regard to members, novices, and persons who live day and night in a house of the institute or society;
3/ those to whom the Apostolic See or the local ordinary has delegated the power of dispensing.
Can. 1197 The person who makes a private vow can commute the work promised by the vow into a better or equal good; however, one who has the power of dispensing according to the norm of ⇒ can. 1196 can commute it into a lesser good.
Can. 1198 Vows made before religious profession are suspended while the person who made the vow remains in the religious institute.