I’m having a hard time + (verb-ing)

By stating you are having a hard time you are letting someone know you are having difficulty with something. This could be something physical or mental and something that could be overcome with effort.

Here are some examples:

“I’m having a hard time writing.”
“I’m having a hard time understanding you.”
“I’m having a hard time answering your question.”
“I’m having a hard time downloading songs to my iPod.”
“I’m having a hard time agreeing to the terms.”

With the addition of a verb you can express in more detail just how difficult something is for you.

Here are some examples:

“I’m having an extremely hard time trusting you.”
“I’m having an extremely hard time with my wife.”
“I’m having a very hard time finding a job.”
“I’m having a very hard time finding parts for my car.”

I think I should + (verb)

Here you are telling someone that you feel strongly about doing a particular action. Here are some examples:

“I think I should practice my reading.”
“I think I should join a study group.”
“I think I should handle this as soon as possible.”
“I think I should earn my degree.”
“I think I should explain myself.”

By adding the word ‘don’t’ you have changed what you are conveying from something you are thinking of doing, to something you are against.

Here are some examples:

“I do not think I should complain so much.”
“I do not think I should attend that event.”
“I do not think I should borrow more money.”
“I do not think I should doubt you.”
“I do not think I should decide until later.”