What should we accept? What should we let go? What is it to let go in Buddhism? 
What is it to accept in Buddhism? 
What are the things we accept?    
What are the things we let go?


Why? 
How? 


What do Buddhists scriptures have to say about it?
What is it to let go in Buddhism?
Is that the Noble Truths?
So

recognise suffering
associate that with (recognise that as arising with) craving and attaching
let go

It's also a past-tense, is it, i.e. -- &quot;suffering having been known in the past, it was dropped&quot;.
What is it to accept in Buddhism?
I'm not sure it is -- does acceptance imply a specific view of a specific &quot;thing&quot; accepted (which may be contrary to the doctine of things being empty), also of a &quot;me&quot; doing the accepting?
Realistically, though, maybe monks accept what &quot;necessary&quot; (i.e. the &quot;requisites&quot;).
There's also conventional wisdom (to be accepted) -- like from here:

And what is wrong view?

'There is nothing given, nothing offered, nothing sacrificed. There is no fruit or result of good or bad actions. There is no this world, no next world, no mother, no father, no spontaneously reborn beings; no brahmans or contemplatives who, faring rightly &amp; practicing rightly, proclaim this world &amp; the next after having directly known &amp; realized it for themselves.'

This is wrong view...

So an excess of &quot;nothing exists&quot; is wrong too.
So I suppose that &quot;accepting&quot; in Buddhism is, at least, not rejecting being kind and so on.
What are the things we accept?
Should accept good advice, probably.
What are the things we let go?
Bad habits. And heedlessness.
Why?
How?
Liberation from suffering -- personal welfare and the welfare of others.