Happy Ramadan,

I heard that there will be people who will go to Paradise without Reckoning nor Punishment and these people have perfect tawheed and complete trust in Allah.

Can someone please tell me in what ways I can perfect my tawheed and how can I show that I do have complete trust in Allah? I want to get to be in that group.

Are there signs to know if I'm included in that group? If yes, what are they? Is there anything I should recite in order to perfect my tawheed and show complete trust in Allah?