Trust in Islam includes everything that Allah has entrusted to you and instructed you to take care of. That includes guarding your physical faculties from engaging in anything that is not pleasing to Allah, and guarding anything that has been entrusted to you that has to do with the rights and dues of others.

If all four requirements of knowing one’s faults are met and balanced, then a good attitude is acquired, the characteristics of which are: strong knowledge, control of anger, control of desire, and a proper balance between these three aspects.

1- With regard to numbers, there is one Hell and one Paradise, but each of them has degrees and levels. The levels of Hell differ according to the extent of their inhabitants’ disbelief in this world. The hypocrites will be in the lowest level of Hell. We know of no limit to the number of degrees and levels in Paradise. It was said that their number is equal to the number of verses in the Quran. 2- The Sunnah describes the position of those who do certain actions. For example: 1- Faith in Allah and in the Messengers, 2-Jihad, 3-Those who sincerely desire martyrdom, 4- giving out in charity, 5- Doing wudu properly, and 6- Memorizing Quran

Ways to improve your charecter in Islam: 1. Knowing the virtues of having a good charecter and the reward that will result from it. 2. Knowing the bad consequences of having a bad charecter. 3. Studying the biographies of the earlier generations (Salaf) and the lives of the righteous. 4. Avoiding getting angry, striving to attain patience, and training oneself to be deliberate and not hasty. 5. Sitting with people of good charecter, and avoiding people of bad charecter. 6. Training oneself to develop a good charecter and trying to make oneself become accustomed to that. 7. Calling upon Allah and asking Him to make your charecter good and help you to attain that.

Joking, whether it is based on truth or lies, has many scenarios: 1- when the joke is based on truth, and there is no lying involved; this is permissible; 2- when the joke is based on a lie; this is prohibited; 3- joking by telling stories, when you are not certain whether they are true, but they could have happened, what appears to be the case, based on the actions of some scholars is that this is permissible. Interesting and funny stories are of three types: 1- stories which we know to be true; there is nothing wrong with this type; 2- stories which are known to be lies and did not happen, it is impermissible to tell these stories; 3- stories regarding which it is not known whether they happened or not; there is nothing wrong with telling these stories.

The conditions of joking are: 1- it should not involve making fun of Islam, 2- the jokes should only be truthful, 3- you should not scare people, 4- you should not mock people by winking behind their backs, 5 the jokes should not be excessive, 6- you should acknowledge people’s status, 7- joking should not involve backbiting, and 8- you should choose appropriate times for joking.

• Allah has instructed the believers not to enter houses other than their own until they have sought permission before entering. • A Muslim man has the right to enter his house even without seeking permission to enter. • Part of perfect etiquette and kind treatment is for a man to seek permission even before entering the room where his wife is, lest he see her in a dishevelled state, or wearing scruffy clothes for doing housework, or similar scenarios in which she would not like him to see her. • If there is another of his Mahrams in his house apart from his wife, such as his mother, his daughter or his sister, then the correct scholarly view is that he should seek permission before entering.

• Abu Sa’id al-Khudri narrated that he heard the Messenger of Allah (peace and blessings of Allah be upon him) say: “If any one of you sees a dream that he likes, it is from Allah, so let him praise Allah for it and tell people about it. But if he sees something other than that, that he dislikes, it is from the Shaitan, so let him seek refuge with Allah from its evil and not mention it to anyone, for it will not harm him.” (Narrated by al-Bukhari, 7045)

Prophet Muhammad’s sleep routine: • He used to sleep sometimes on a mattress, sometimes on a leather mat, sometimes on a mat made of palm leaves, sometimes on the floor, sometimes on a bed, sometimes on the sand, and sometimes on a black cloak. • When he went to bed to sleep, he would say: “Allahumma bismika ahya wa amut.” • He used to sleep on his right side, putting his right hand under his right cheek. • When he woke up from sleep he would say: “Al-hamdu Lillah alladhi ahyana ba’d ma amatana wa ilayhi Al-nushur. • He used to sleep during the first part of the night and get up to pray during the last part. • His sleep was of the best length and it was the most beneficial of sleep. The doctors say that it is one-third of the night and day, namely eight hours.

There are so many sound du'as that you can say before sleeping that were narrated in the Prophet’s Sunnah. For more, see the detailed answer.