A faulty ‘God concept’ that people have in their mind can greatly contribute towards mental problems such as mental confusion, delusional thinking, fear, hatred, jealousy, mental slavery to religious leaders or institutions, or recurring mental turmoil that constantly disturbs their peace of mind. When such people ‘pray to God’ to help them with something but feel their prayers are not being answered, they get upset, bitter, depressed and frustrated. Looking for someone to blame is a normal negative quality of most humans but it can easily be overcome through knowledge. Until one continues to have a delusional mind that believes someone else is causing them troubles or harm, they will not be able to attain mental peace. Every action has a reaction which means that if something is happening in your life, either good or bad, the only possible cause for it is yourself. Holding someone else, planets or God is absurd. Bhagavan Krishna said that the mind and the senses are carried by the Soul when it leaves a body (SBG 15:08). Karma is not something that is recorded in a heavenly server in the sky! But all thoughts, words and deeds of a person are recorded as impressions on their mind which in turn influence the their Gunas. Therefore, people who would like to change their life, need to work on changing themselves and refining their own Gunas apart from praying or chanting Mantras.
The Sanatana Dharma although ancient, is the most rational and advanced philosophy. There is no ‘sky daddy’ who punishes his own creation when they don’t listen to Him, no messengers, no satan, no hell, no evil guys to beat you up with red hot spiked iron rods and boil you in oil for eternity, no heaven, no damsels in the heaven, no resurrection, no day of judgement and none of such other things that organised religions force their followers to believe in. You can start studying the Sanatana Dharma by reading scriptures such as Itihaasaas, Puranas and Upanishads and finally reach the stage of Super-consciousness. You are also absolutely free to decide whether you would need multiple Janmas (lifetimes) to reach the final goal or if you would like to do it during the current one.
As compared to organised religions, the best part of the Sanatana Dharma which was neither started by nor named after an individual is that there is no compulsion to believe in anything at all. Being a nature loving modest and sincere seeker should do.