Recite as much of the Qur'an as you can every day. Ask for the peace and blessings of Allah upon His Prophet, sallallahu 'alayhi wa sallam, often.
Keep up the five obligatory prayers, as well as voluntary night prayer and the forenoon (dhuhr) prayer, even if it be only two raka'at.
Pay your obligatory zakat, and give in charity every day, even if it be only very little. If you cannot afford to, then give it in the form of a kind word. Fast Ramadhan, and three days each month.
Would you not like to be one of those whom Allah loves? Then love your Prophet Muhammad, sallallahu 'alayhi wa sallam, and his family. Be good to your parents.
Would you not like to be one of those who say, "O Lord, O Lord" and to whom Allah says, "Here I am, O My servant; ask, and it shall be given to you"? Your prayers will be answered if you eat only what is good and halal; be just to people, even if it be at your own expense; and show good character in all your dealings with people.
Would you not like to be one of those whose supplications are favourably answered, for your written record to be radiant with light on the Day of Ressurection? Purify your heat and repeat frequently, "There is no god but Allah" (la ilaha illallah). Ask forgiveness for your sins, and for those of all believers, male and female. Never let yourself be one of those who forget to call upon Allah.
Would you not like to be one of those who gives praise and thanks to Allah and is brought neat to Him? When Allah's servant says, "Praise be to Allah," Allah says, "My servant has praised and thanked Me"; so be sure to repeat often, "Praise be to Allah, and peace be upon His chosen servants" (alhamdulillahi wa salamun 'ala 'ibadihi 'lladhina'stafa).
Would you not like to be one of the thankful, and that Allah makes your offspring good and pious? Then you should recite the following two verses of thanksgiving: (i) "My Lord, grant that I may be grateful for Your favours, which You have bestowed on me and on my parents, and than I may act righteously so as to please You; and admit me, by Your Mercy, to the ranks of Your righteous servants," [Al-Qur'an 27:19] and (ii) "O my Lord, grant that I may be grateful for the favours which You have bestowed on me and upon my parents, and that I may act righteously so as to please You; and make my offspring good for me. I have turned to You in repentance, and I am of those who submit themselves to You (muslimin)." [Al-Qur'an 46:15]
Would you not like to be guided as to how to integrate soundly your religious and your wordly affairs? Do your utmost to act according to the Divine Command: "O you who believe, bow down, prostate yourselves, and adore your Lord; and do good, that you may prosper." [Al-Qur'an 22:77]
Would you not like to be guided to the heart of the matter? "Say: 'I believe in Allah'; then follow the Straight Path."
From Jewels of Guidance: Advice from the Prophet Mohammad (pbuh) compiled by Hamzah Muhammad Salih Ajjaj, Dar Al-Taqwa Limited 1993CE / 1414H.
O Allah, you see our hearts full of idolatry, pride, hypocrisy, showing-off, reputation, doubt and uncertainty in your din. O Turner of hearts, make our hearts firm in Your din and make our din Straight Islam! - Al-Hasan al-Basri (d. 110H), may Allah have mercy upon him