How can I make a 100% answered supplication?

Allah described Himself as the Near, who answers the call of the caller when he calls upon Him. The Prophet, peace and blessings be upon him, clarified that a Muslim never makes a supplication to Allah except that Allah grants him what he asked for, or diverts from him an equivalent amount of evil. He commanded supplication with certainty of response, and that Allah does not respond to a supplication from a heedless, inattentive heart. Thus, every supplication a Muslim makes with certainty and presence of heart is answered, unless it involves sin or severing ties of kinship, and provided there is no impediment to the answer, such as consuming unlawful earnings or neglecting enjoining good and forbidding evil.