If you feel like you can't get that sense now, I think it would make more sense to ask yourself- Why? What is it you wanted to achieve/ see/ experience in life that you haven't? Can you realistically achieve those things now?
All I can do is share my own experience. So, there are a couple of things I'd like to do before I CTB. I'd like to eat some nice food and see some beautiful landscapes with water in. But- if I really think about it and think- if I had to CTB tomorrow- would I be ok with that? I'd hope that I would. The reality is- I have eaten nice food. I have seen beautiful landscapes. Yes- those things would be nice to do in the moment but I believe- if/ when we die, all our moments end and vanish. I don't believe I'll be able to regret not having done those things at that point.
As for bigger life stuff- relationships, friendships, career goals- I've either rejected them all together or I feel like the reward won't be worth the effort I put in.
It probably depends on how 'pressing' your death feels too. Mine is likely to become very pressing all of a sudden and in a general sense- the wish I have to not endure my future outweighs a couple of experiences that might bring me a bit of happiness. So- to me- I feel relatively comfortable with the decision itself. Of course- carrying it out is a whole other matter but I'm hoping the nature of my circumstances will be enough to scare me in to it.