Please avoid the following
Reduce watching TV, instead spend more time reading the Quran and other Islamic literature.
Avoid looking at unlawful pictures, whether magazines, department store catalogs or otherwise.
Avoid going to theaters; instead go to Masajid, Islamic organizations and make that a daily habit.
Avoid eating too much. Eat only when you are hungry and try not to fill your stomach completely.
If you drink Coffee, Tea or Soda, be sure to reduce consumption.
If you smoke, try to reduce daily usage; otherwise Ramadan will be very difficult for you to observe.
If you like to listen to music, whether the style of western societies or even those from Muslim countries, reduce, even eliminate the time you spent on them; replace them with reciting and listening to recitation from the Quran.
If you enjoy playing cards and board games try your best to avoid them as much as possible and fill your time with something useful.
If you enjoy going with friends to picnics and other social gatherings, try to reduce it before Ramadan; otherwise fasting the month of Ramadan will be more difficult.
If you have friends who do not practice the teaching of Islam, try to avoid socializing with them.
If you travel a lot on business, try to do more local business, so you can be more closer to your family and community.
If you are used to staying up till midnight, try to go to bed earlier, so that you will be able to wake up early for Salat al-Fajr and Tahajjud prayers as well.
Please try to keep the following
Start reading Quran daily after Salat al-Fajr.
Spend some time listening to recitations from the Quran.
Train yourself to go bed early so that you can wake up far Salat al-Fajr.
Keep yourself in a state of Wudu (Ablution) most of the time.
Evaluate yourself daily before going bed.
Thank Allah for good deeds, and repent to Him for your mistakes and sins.
Start giving Sadaqah daily, no matter how little. Make it a habit like eating and drinking.
Find time to pray extras, such as Tahajjud prayers.
Spend more time reading Islamic books, especially the Quran, Sirah, Hadith, and Fiqh.
Find time to help others with your wisdom, knowledge and other talents.
Try to write articles on Islam for Muslims as well as for non-Muslims.
Associate with Muslim scholars / ulama and other pious people so that you may learn from them.
Train yourself to do good, render free service to others to seek the pleasure of Allah.