Offer two cycles of prayers with the intention of Hajat, then offer two cycles for the acceptance and then two cycles of voluntary prayer with the intention of seeking forgiveness(you can combine all three intentions for two cycles only as well) then recite durood 11, 21 or 41 times. Then recite Surah Yaseen 11, 21 or 41 times and Ayatul Kursi 11, 21 or 41 times,

then recite Astaghfirullah 11,21 or 41 times. Then pray to Allah Almighty for as long as you have taken for doing all this recitation. Never try to shorten the recitation or the prayer. Try to beautify your recitation with full focus and concentration. Everyone of your family can perform this recitation. Then pray for the whole Ummah including believers as well as non-believers.