Heavenly Father will answer humble and sincere prayers if the request is related to spiritual growth, becoming a better servant, turning more toward Him, serves Him, brings more spiritual happiness to oneself and to others, or that the request is in the best interests of the Lord in general.
If the request is not for or about spiritual progress and improvement, but asking for money or material things or interests that may do harm to oneself, then the answer likely will be "no". Usually the answer "no" is either silent or nothing happening during the day or few days, weeks, months following the time the question was asked.
Sometimes if the question was good and in the Lord's approval, it may take a long period of time or it may be soon and patience is usually required for the time being.
It all depends, but the Lord is not the one to blame but ourselves for either not understanding, or listening, or for having done a wrong we may not even be aware of. If this is the case, we (individually) need to repent. What is so hard about repenting? In case somebody wishes to know how to repent, simply go in your own bedroom and close the door behind you, kneel and address Heavenly Father (properly) 1. Thank Him for all He has done (etc. in thanksgiving) 2. In your own humility and words express your apology (I am sorry) for (whatever wrong done or for all wrongs) 3. Ask for His wisdom, guidance and Holy Spirit to be with you and whatever else that is good or right you may ask. 4. Close your prayer properly.
When you do this, this action shows you have faith. Remember, just like in a weight room the first time, a body builder needs to start light, then over time slowly build strength. Same with faith. Take care and God bless!
