Walaikusalam Sister, I was once enlightened by a wise scholar in a talk he delivered in our local Masjid that one will rarely find evidence in Qur'an or Sunnah that you have to pray a certain supplication or a Name of Allah X amount of times to achieve a particular goal. However he advised there was nothing wrong with devising one's own method to achieve a permissible goal, as long as you were not going against the commandment of Allah to attain it. So for example from my personal experience, I recently took an interest in flowering and through neglect of a particular household plant over years, this beautiful flower had wasted away and died. So I used to recite various names of Allah 10 times, for e.g. AL-BA'ITH (The Ressurector), AL-MUHYI (The Giver of Life), AL-MUQIT (The Nourisher) and blow upon it, with unwavering doubt that Allah will make it bloom again one day, even though human logic probably said "you need to bin it". NOTE: there was no particular reason why I chose the number 10 apart from keeping it as low and rounded as possible so I could read with frequency. One day to my delight a stem had emerged from the soil and a radiant coloured petal had bloomed (Subhanallah). So for me the method I utilised worked. A lot of Books written by knowledgable Ulamah's will recommend you read a particular supplication, etc X amount of times to acheive a particular objective and I don't personally see anything wrong with that. Unfortunately there is a tendancy these days for some people to lose sight of the bigger picture and say what you are doing is a Biddah as it is not stated in Qur'an or Sunnah, which I believe is incorrect.