A RECIPE FOR THE FIRE

Allah says in the Holy Qur'an:

(The Companions of the right hand will question the sinners) What led you into Hell Fire? They will say: We were not of those who prayed; nor were we of those who fed the indigent; but we used to talk vanities and vain talks; and we used to deny the Day of Judgment. (74:40-46)

According to what the Companions of the Fire said, there are four points, when neglected, will lead one to Hell. These are:

Salaat: This is a universal institution, and was prescribed to mankind through all the Messengers that came on earth. We have examples where Moses used to "fall on his face and worship"; Jesus, when he was about to leave this world, spent a lot of time in the Garden of Gethsemane worshipping, and in Islam it is made a Fundamental Principle of Faith. So important is this act of worship, that it must be observed even in the most difficult situation. The Prophet (pboh) is reported to have said that: Salaat distinguishes a believer from a non-believer.
Feeding the hungry: We see in Qur'an and in Traditions that feeding the hungry is one way of atoning for sins. In a Hadith e Qudsi, Allah indicated that to feed the hungry is like feeding Him; this will bring immense reward to the person who does so.
Managing ones time properly: Time management is extremely important in Islam. Every believer knows that he has a duty onto his body and one for his soul, so that he has to give due attention to both. There are those who just waste away their time with vain and idle talk; or they frequent places of entertainment and spend hours, but they do not have time to read the Qur'an or worship Allah, etc. Such people are doomed.
The day of Accountability: We came from Allah, and our goal is to go back to Him. He does not like impurities, and because sin is impurity, the sinner will not get close to Him unless he repents and make amends. When Adam sinned he was expelled from the Garden. Those who do not believe in the Day of Accountability will be careless about their deeds and actions and may violate every moral and ethical principle, so that on that Day, they will have nothing of Good that may be of assistance to them.

Islam enjoins upon believers to associate with good and avoid evil in order to be successful.