In the name of Allah the most Beneficent and Merciful.
Repentance is a virtue and Allah is known as the Al Gafoor (the all forgiving). It is true that many people perform repentance and then sometimes go astray with the devious nature of Shaitaan, the cursed. You must always keep on turning to Allah and asking for true repentance as Insha Allah, He will forgive. Firstly, ensure that you stay away from the major sins and keep praying your five-times` daily prayers, the minor sins will be automatically be forgiven (Insha Allah) but keep thinking ill of them.
Allah knows best
[Answer provided by: Muhammad Salim Ghisa]