The most important decision anyone will ever make is the decision to be born again. As a tree branches into the seen and into the unseen, we too have a body and a spirit. We are born with a body, but unless someone is born of the spirit also, the abundant life that was meant for them since the beginning is not there.
The thief on the cross asked Jesus to remember him and Jesus said, you will be with me in paradise. The thief simply believed. Jesus forgives us and gives us a new beginning, changing our heart.
A Guiding Prayer (example)
Father in heaven I believe you sent your son Jesus to pay for my wrongs and I trust him to make me new and to give me a life that never ends with you. Take my life, I'm listening. Guide me until I meet you face to face.