Wanting bliss is a form of grasping. Knowing bliss will come if you practice properly and focussing on the practice not the outcomes is more useful.
"[You] really don't know clay until you become a potter and actually try to make something out of the clay... And it's the same with the mind: unless you actually try to make something out of the mind, try to get a mental state going and keep it going, you don't really know your own mind. You don't know the processes of cause and effect within the mind. There has to be a factor of actual participation in the process..."
"Still another reason why solid concentration is necessary for insight is that when discernment comes to the mind, the basic lesson it will teach you is that you've been stupid. You've held onto things even though deep down inside you should have known better. Now, try telling that to people when they're hungry and tired. They'll come right back with, "You're stupid, too," and that's the end of the discussion. Nothing gets accomplished. But if you talk to someone who has had a full meal and feels rested, you can broach all kinds of topics without risking a fight. It's the same with the mind. When it has been well fed with the rapture and ease coming from concentration, it's ready to learn. It can accept your criticisms without feeling threatened or abused."
"Another advantage to this mindful, concentrated state is that as you feel more and more at home in it, you begin to realize that it's possible to have happiness and pleasure in life without depending on things outside of yourself — people, relationships, approval from others, or any of the issues that come from being part of the world. This realization helps pry loose your attachments to things outside."
..... that is the real benchmark. Did your experience leave you with positive qualities that extended into your life? Did it help you be calmer, kinder, gentler, more humble, more forgiving, or more loving? Did it heal you in some way? .....