Allah the Most High said:

وَالَّذِينَ جَاهَدُوا فِينَا لَنَهْدِيَنَّهُمْ سُبُلَنَا وَإِنَّ اللَّهَ لَمَعَ الْمُحْسِنِينَ

 But as for those who strive hard in Our cause -We shall most certainly guide them onto paths that lead unto Us: for, behold, God is indeed with the doers of good.

Allah linked guidance to struggle (or effort put in), meaning that the people who are the most guided are those who put in the most effort. And the most obligatory forms of Jihad is that of ones own soul and the Jihad against lusts and desires, alongside with Jihad against the Shaytaan and Jihad against this dunya. So whoever struggles against these four things seeking the pleasure of Allah than Allah will guide him towards His pleasure and Jannah. And whoever leaves of this Jihad then his guidance will be deficient in proportion to how much he neglected this type of struggle. al-Junaid said (explaining the verse):

But as for those who strive hard against their desires in Our cause through repentance -We shall most certainly guide them onto the paths of ikhlaas (sincerity): and it is not possible for a person to fight against his enemies if he can not overcome these things.

 So if he is victorious in this type of Jihad then he will be victorious fighting his enemies however if he fails in this type of Jihad then he will surely be defeated by his enemies.

[Fawaa-id al-Fawaa-id by Imaam Ibn al-Qayyim]