Signs of weak Faith :
·  Committing Sins And Not Feeling Any Guilt.
·  Having A Hard Heart (no sign of mercy and petty when it comes to own benefit/loss).
·  Being Materialistic too much.
·  Feeling Too Lazy To Do Good Deeds, e.g. Being Late For Salat
·  No Desire To Read The Quran.
·  Neglecting The Sunnah.
·  Having Mood Swings, For instance Being Upset about petty things and bothered and irritated most of the time.
·  Not feeling anything when hearing verses from the Quran, for example when Allah warns us of punishments and His promise of glad tidings.
·  Finding difficulty in remembering Allah and making dhikr.
·  Not feeling bad when things are done against the Shariah.
·  Desiring status and wealth too much.
·  Being mean and miserly, i.e. not wanting to part with wealth.
·  Feeling pleased when things are not progressing for others.
·  Not concerned with whether something is haram or halal. 
·  Making fun of people who do simple good deeds, like cleaning the mosque.
·  Not feeling concerned about the situation of Muslims.
·  Not feeling the responsibility to do something to promote Islam.
·  Becoming engrossed and very involved with dunya, worldly things, i.e. feeling bad only when losing something in terms of material wealth.
·  Becoming engrossed and obsessive about ourselves.
How To increase Our Faith Then ?
·  Remember death and qabr regularly.
·  Do more and more zikr (rememberence of Allah swt).
·  Think of Allah’s and Prophet’s pleasure in every action we do.
·  Recite and ponder on the meanings of the Quran. Tranquility then descends and our hearts become soft. To get optimum benefit, remind yourself that Allah is speaking to you. People are described in different categories in the Quran; think of which one you find yourself in.
·  Realize the greatness of Allah. Everything is under His control. There are signs in everything we see that points us to His greatness. Everything happens according to His permission. Allah keeps track and looks after everything, even a black ant on a black rock on a black moonless night.
·  Make an effort to gain knowledge, for at least the basic things in daily life e.g. how to make wudu properly. Know the meanings behind Allah’snames and attributes. People who have taqwa are those who have knowledge.
·  Attend gatherings where Allah is remembered. In such gatherings we are surrounded by angels.
·  We have to increase our good deeds. One good deed leads to another good deed. Allah will make the way easy for someone who gives charity and also make it easy for him or her to do good deeds. Good deeds must be done continuously, not in spurts.
·  Remember the different levels of akhirah, for instance when we are put in our graves, when we are judged, whether we will be in paradise or hell.
·  Make dua, realize that we need Allah. Be humble. Don’t covet material things in this life.
·  Our love for Subhana Wa Ta’Ala must be shown in actions. We must hope Allah will accept our prayers, and be in constant fear that we do wrong. At night before going to sleep, we must think about what good we did during that day and sins we committed. (gheebat, lie, back biting, etc)
·  Realize the effects of sins and disobedience- one’s faith is increased with good deeds and our faith is decreased by bad deeds. Everything that happens is because Allah wanted it. When calamity befalls us- it is also from Allah. It is a direct result of our disobedience to Allah.