Umar ibn al-Khattab (Radi Allahu anhu) I am not worried about whether my du'a will be responded to,but rather I am worried about whether I will be able to make du'a or not. So if I have been guided by Allah Azza Wa jallah,then I know that the response will come with it.

Ibn al-Qayyim said:
The world is like a shadow;run after it and you will never be able to catch it,turn your back against it and it has no choice but to follow it.

*If the du'a is combined with the following factors:
💐 The presence if the heart,and its full concentration on the Dua.
💐 Making du'a at one of the times of response.
💐 A meek heart,one that is broken and humiliated in the presence if Allah jallah jalalahu,full of humbleness and softness.
💐 Facing the qiblah
💐 In a state of wudu
💐 Raising one's hand to Allah
💐 Starting the du'a with the praising Allah is the Most High.
💐 Following that up with salutations upon the prophet (Sallallahu alaihi wasallam).
💐 Preceding the du'a with repentance and seeking forgiveness for past sins.
💐 Preceding the du'a by giving out charity.
💐 And finally entering in upon ALLAH,being persistent in asking Him, and calling upon Him in a state of fear,hope and performing Tawassul with His Names And Attributes.

From Du'a- Weapon of the the Believer by Abu Ammar Yasir Qadhi.