If you are losing faith in Islam, you need to increase your hope and trust in Allah. You should increase your good deeds, such as reading the Quran, giving charity, remembering Allah (Dhikr), upholding the ties of kinship, etc.

Here are some useful tips for resisting the temptation to show off: Remembering that Allah is always watching His slave. Seeking the help of Allah. Knowing the effects of showing off and how it will be judged in the Hereafter. Thinking about the punishment in this world for showing off. Concealing worship and not making a display of it.