If you are thinking it will be better later, then you are likely to keep on thinking it will be better later, in which case "better" will alway be "later".
Instead, experiment with this:
Think, or rather just notice that you can relax now, in the middle of work.
And see what happens when you do...
Go to a meeting with the intention to relax.
Empty your inbox and relax at the same time.
Find a relaxed approach in a conversation with someone.
And remember:
Your work is not you!
It is your work
but you are not your work.
You can actually be relaxed in the midst of it.
I wish you a great week!
Keep exploring!