When did you go to Tirupati?

Vow (Mokku) fulfillment in Tirupati

It doesn't happen to you, you show it by your own actions or by their lack of them. Such beliefs and traditions serve a more functional purpose in addition to the divine context in which they are wrapped. Even if one cannot understand the action of God, one can always understand it in the context of one's own action or its lack of it.

Such vows and beliefs and traditions about them are meant to instill two things. (a) You should get the Carelessness of promises understand and therefore avoid. (b) It helps you instill discipline, in some cases sensory control, dispassion, and self-sacrifice.

Frivolity of promise:

Look at the first. There are many instances in the scriptures where X made a promise to a rishi or god, did not do so and had consequences.

The Kauravas said that the punishment for the Pandavas was to stay in the forest and then stay incognito for a year, which Pandavas did, but the Kauravas did not keep their end of promise.

In contrast, Sri Rama fulfilled a promise, that of being father Kaikeyi had given, and Dasaratha himself kept a promise he made to Kaikeyi years ago during a war. Such strong hold on to the truth may be unknown and ridiculous in this day and age, the sons may not even pay the credit card debt, but this is the high standard set by the ideals of the seers.

You can see that in everyday life too. Assume this situation. You assure your boss: "I will work 8 hours a day for the next three months and finish this project by the end of February." But over the coming weeks, for example, you'll spend your time surfing the Internet, reading and writing replies to hinduism.stackexchange and a million other websites, and spending your time doing it. The clock is ticking every day, you remember it but ignore it. The boss calls you on the agreed day and dismisses you. Who is responsible for this plight? You! Boss has not "happened" to you particularly bad things, he gives you the result of your own indolence. You dug your own pit, a little every day. If anything, this is what bosses need to do to set a benchmark for the moral order so others will know what it means to promise and what it means to knowingly violate it.

God didn't ask you to make a deal with her. You felt the need, so you went to God and believed in her. She did it for you. That is your belief too. If you believed that a certain event was going to happen because of her, after the good event happened, you can't comfortably say that it happened because of your own effort, can you?

Remember, God doesn't worry about you going to their temple, but you are their son. She may be more concerned about the indiscipline, offense, and betrayal that you have allowed yourself and these may not work well for you in the world, in your work, in your relationships, and even for yourself than feelings of guilt in your mind as well Conscience.

The mother has to say: "Do the homework or no ice cream". She may occasionally give you the ice cream without the homework, but if it occurs repeatedly she is more concerned about the homework pattern than the pleasure of ice cream.

If you make a habit of keeping your promise to God because you know that one day she will be almighty, we may grow up and keep our promises to people because God watches us through them. Swami Sivananda used to say that the karmic effect of breaking one's promise is mental agony and pain, which applies to both divine promises and those in the material world.

http://www.dlshq.org/download/karmadisease.htm

Teaching discipline:

Aside from the vow to only visit one temple, in many cases the vows are also accompanied by a specific vratham, a daily code of conduct that eschews anything impulsive or mundane. A pilgrimage to Sabarimala, for example, requires restrictions in one's own behavior. Sometimes it even provokes a certain behavior towards us, from others . http://www.ayyappaseva.org/Sabarimala/AyyappaVratham

Simple people, avoid smoking, are aware of harming others, avoid certain types of food, etc. http://www.dlshq.org/download/20instrch.htm#_VPID_28 Some of them require giving up comfort, it teaches you to be dispassionate about worldly things for this time. Some people give up things that are otherwise close to their hearts in material terms (e.g. the tonsure of the head) because it helps to know the impermanence of external appearances and who would do it, if not out of devotion to a higher being ?

It's like jogging in army training, you don't jog all the time after your post, but it keeps you fit and fit for a moment of readiness in unsafe situations. Such periods give you a little window to show you that with conscious use of willpower you can be a master of your senses when attuned to a higher ideal.