Really need more details as to how you normally feel as well as your general lifestyle. That being said

As far as reality feeling different there are multiple explanations

1) Psychosis (doesn't sound like what youre describing as thats not a something anyone would like or be ok with.

Derealization/depersonalization, could just be a mild case, believe it or not there are some people who get a sense of calm from the feelings and perceptions associated with these

3) Depression or bipolar disorder, its possible you have had a low grade depression for some time and are starting to recover thus everything seems different or shifted, or in the case of Bipolar disorder you're experiencing a manic or hypomanic episode( If this is the case you're going to feel great at first and then you'll crash hard. A lot of Bipolar people refer to their first onset as a sort of awakening, as if they were asleep prior.

4) Something could be wrong with your brain, chemically or psychically

5) IMO the least likely option, spiritual awakening, I do not doubt the existence of these but I believe the vast majority of people who claim to experience them are in fact mentally ill in some kind of way.

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Your best bet is to go to a doctor and proceed as needed.