Pray all the nafela (Sunnat) of day and night even though in a short form. The performance of nafela prayers completes the compulsory prayers. From experience, it is observed that by praying night's nafela there is increase in wealth and by praying zohr and Asr nafela guidance to the right path is facilitated.Beware! Don't leave nafela prayers on the excuse that you are busy and you have no time. Nafela will be helpful in your work - not an impediment. The purpose of knowledge is action. It is meaningless to leave action for knowledge.
Son! Always pray compulsory Namaz with Jamat whether you are Imaam or mamoom. There is a lot of sawab. See that you are not deprived of this sawab. It is stated in the traditions that by praying with Jamat, the sawab is multiplied 150 times. As the people praying with jamat increases, so also sawab increases. So much so that if there is a big congregation, jinns and human beings collectively cannot count its sawab.
Punctually recite Tasbihe-Zehra (a.s.)' after namaz. Do Sajd-e-Shukr' without fail. Whenever you are in trouble, put down your head on the ground with the intention of Sajd-e-Shukr' and recite the dua which Hazrat Jibraeel had shown to Hazrat Yusuf (a.s.) to get him released from prison.
Keep fast on first and last Thursday of the month as well as middle Wednesday. This is equal to fasting the whole life.
Recite Qulhowallah' at least 3 times a day. This is equal to completing the recitation of one Holy Quran. It is on the strength of the traditions that Hazrat Salman had proudly stated that he is fasting daily, he is praying the whole night and he is completing the recitation of the Holy Quran daily. When Umar objected to this, Hazrat Salman replied: By keeping 3 fasts a month, I collect sawab of one month's fasting, by sleeping with Wuzu, I earn the sawab of a whole night prayer and by reciting Qulhowallah' thrice a day I earn the sawab of completing the recitation of the Holy Quran daily. The Holy Prophet (s.a.w.a.) agreed with Hazrat Salman's statements.
Son, if you go to some momeen's house while keeping a sunnat fast and if he invites you for food, eat with them without declaring that you are fasting. If you declare that you are fasting, then you are obliging him by giving sawab of Iftar which is against the spirit of hospitality. Allah will give the sawab of one year's fasting if you do iftar without declaring your fast.
(Furu-e-Kafi - 4, p. 150)