Abate/Diminish/Decrease/Lessen + something

[Garlast]

I'm trying to learn Japanese Kanjis but they abated any thrill I had on learning about Japanese writing.

The less you focus on improving in Chinese writing, the more your tint will diminish if you keep using the pen that way.

Since I realized it wasn't love, every thought and good feeling I had due to his actions started to decrease as my smile dwindled down.

I always lessen my words to get straight to the point.

These similar words get me really confused... Any corrections? I don't really understand how to use 'to lessen'...

 

[RedwoodGrove]

Normally this board does not proofread sentences or handle more than one question at a time, but I'll give a couple of my impressions.

I'm trying to learn Japanese Kanjis but they abated any thrill I had on learning about Japanese writing. ("abate" is often a formal or technical term used in the legal or regulatory matters, perhaps not quite right here)

The less you focus on improving in Chinese writing, the more your tint will diminish if you keep using the pen that way. (probably OK -- the context would have to fill out the picture)

Since I realized it wasn't love, every thought and good feeling I had due to his actions started to decrease as my smile dwindled down. (would be better to say your good feelings dwindled, your smile faded)

I always lessen my words to get straight to the point. ("lessen" is difficult to use in any sentence because it sounds like "lesson" -- say "limit" here)

These are impressions of mine. Others may have a different view. A lot of this has to do with exposure to the words as they are used in context rather than dictionary definitions. You're pretty close!