Think nothing of (something)

To not worry or be concerned about something.My friend thinks nothing of spending most of his money in one evening.

Think much of (someone or something)

To like or think well of someone or something.Everybody thinks much of the new manager.

Think little of (someone or something)

To think that someone or something is not important or valuable.The woman is not very happy and she thinks little of the people she works with.

Think inside the box

To think in a traditional way using old ideas or rules or practices.Most people in our company think inside the box and there are few new ideas.

Think highly of (someone or something)

To like or think well of someone or something.The citizens think highly of the new top judge.

Think better of (doing something)

To think about something again and make a better decision regarding it.I would think better of going to Europe in the winter if I go there again.

Think back on (someone or something)

To remember and think about someone or something in one's past.When I think back on my school days I always remember my favorite teacher.

Think a lot of (someone or something)

To like or think well of someone or something.My grandmother thinks a lot of her grandchildren.

Think a great deal of (someone or something)

To like or think well of someone or something.Everybody thinks a great deal of the new company president.

Thin-skinned

To be easily upset or hurt, to be too sensitive.My friend is very thin-skinned and is easily bothered by what other people say.