The way to Jannah and the Hell fire
Abu Hurayrah (radi Allahu anhu) reported that the Messenger of Allah (sal Allahu alaihi wa sallam) said. “The (Hell) Fire is surrounded with all kinds of desires and passions, while Jannah is surrounded with adversities.”
[Sahih al-Bukhari and Muslim]
The way to Hell is littered with these evils. When a person crosses them, it is an indication that he has entered into Hell. On the other side exists a series of griefs and calamities, Islamic injunctions and obligations (the compliance with which is often irksome for man) impede his way to Jannah. When a person endures them with patience he, in fact, overcomes those obstacles and becomes eligible for Jannah.
And Allah Knows Best!