Lucky are those who have their parents alive. But even luckier are those whose parents were / are pleased with them. If paradise is under the feet of your mother, then your father is your biggest gateway to Jannah. So get your 'Father Satisfaction Guarantee' now to be allowed the entry later.
Hey dad, promise to keep the door open?
Abu Darda reported: The Prophet, peace and blessings be upon him, said, “ The father is the middle of the gates of Paradise, so keep to this gate or lose it.”
Source: Sunan al-Tirmidhī 1900
عَنْ أَبِي الدَّرْدَاءِ قَالَ قَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ " الْوَالِدُ أَوْسَطُ أَبْوَابِ الْجَنَّةِ فَإِنْ شِئْتَ فَأَضِعْ ذَلِكَ الْبَابَ أَوْ احْفَظْهُ" (سنن الترمذي كتاب البر والصلة باب ما جاء من الفضل في رضا الوالدين)