In Ibn Qayyim’s book on Paradise [Hadi al-Arwah ila Bilad al-Arwah] and he discusses the key to Paradise, without which you cannot enter and made a summary of a few key concepts and the keys to them. Some of the KEYS he mentioned as follows:
The Key to:Hajj – is Ihram
Birr – is Truthfulness
Jannah [heaven] – is Tawheed [belief in Oneness of God]
Knowledge – is Good questions and paying attention/listening
Help/victory – is Sabr [patience]
Increase blessings – is Shukr [give thanks and gratefulness]
Friendship and Love of God [Allah] – is Remembrance of God [Dhikr]
Tawfeeq [ability to do good] – Raghbah and Rahbah [Longing and Fear]
Longing for Akhirah – is having Zuhd [abstinence of this world]
Iman [faith] – is Tafaqur [Contemplating on creation of God and His Ayat]
Life in the heart – is contemplating on the Qur’an
Increase of Rizq [sustenance] – is Make much Istighfar [seeking forgiveness] and Taqwa
Having Honour – Obeying Godand His Messenger
Key to all good – is longing to meet God
Key to all evil – is loving this Dunyah and having long/extending plans/hopes in this world.