SGI President Ikeda's Daily Encouragement for March 30

There are many elements involved in a prayer being answered, but the important thing is to keep praying until it is. By continuing to pray, you can reflect on yourself with unflinching honesty and begin to move your life in a positive direction on the path of earnest, steady effort. Even if your prayer doesn't produce concrete results immediately, your continual prayer will at some time manifest itself in a form greater than you had ever hoped.

those bolded words are very important. some reasons why your prayers aren't answered
1.you are praying for something bad to happen
2.gohonzon dosen't want you to have these things, he has something better in store for you.
3.you are not praying with your heart

so take these down and always remember in your heart not to ever give up. because u have nothing to lose =)