Some scientists believe that we are, or become, what we think, also that there is another dimension of existence which is made up of energy in which thoughts create patterns that become reality.
I would like to add two thoughts of what I think but it is impossible to be brief: one is that life after death might be like Peter Pan and the fairies - you have to believe to make it happen! When I was a teenager I read a lot of books about spiritualists etc one claimed that he had seen heaven (maybe a near death experience) and in one corner were a lot of people huddled together doing nothing - just waiting - while all around them were joyful, happy people. Who were these sad people? He said they were Christians who believed that they would be in limbo after death until Jesus returned, when they would all be resurrected and join him on earth. So they were waiting ......... . Just think, if you are going to a new country and are told by your guide that it only contains x and y, when you go there would you only be looking for x and y,, or would you look around just in case there is something else there? It is so important to have an open questioning mind.
Second - if heaven is a "spiritual" place, and only your soul, spirit, mind or whatever word you want to use, goes there (assuming that you do not believe in a bodily ressurrection) then it is logical that all the things we are attached to on this earth that make the body happy, will be irrelevant - clothes, make up, clubbing, films, computer games, tv, food, drink, sex, etc. If a person gets all their happiness from these things alone, then without a body they will be totally lost and have no idea what to do, think or how to 'be'. They could be in the most 'heavenly' place and not be aware of it, or care, or even want to be there. Whereas, a person who enjoys being with others, helping others, being caring and loving, acquiring knowledge, being inquisitive, open to new ideas - will love 'heaven' - will find people and things to appreciate, and even something to do there.
So, to 'enjoy' heaven, you need above all, to believe that there is life after death, and secondly, to become the sort of person that will enjoy the experience. If you deny this entirely you will not be in hell, it will be more like oblivion - the idea of death as the end of everything is a self fulfilling prophecy. If you have a niggling doubt, you may discover that there is life but not have the capacity to enjoy it to the full - there may be regret but still some degree of happiness. If you live your life on earth knowing that this life is just a step to that eternal life to come, and try to live in a way that does not harm, but enhances the lives of others, and cultivate virtues, then I am sure you will find heavenly joy when you die, regardless of whatever Faith you had on earth.