Don't be afraid of the flood gates. Yes, breakthroughs can be very scary, usually (I think) because to get to the good things at the end of the process you have to go through and destroy a lot of the assumptions you have about something. For example, realising that you are a man and that real masculinity is good can be great but you may have to deal with some past experiences where a man has dominated, hurt and abused you and shaped your past understanding of masculinity. Or, for joy, you may have to deal with the fact that joy does not last forever before you can give in an enjoy the moment.
Be strong. The flood will pass and you will be left with more good things than you had before.