Any thought it was not meaningful

Any thought it was not meaningful. You can convert every thought into meaningful.

You can think always good and knowledge obviously will get most of the thoughts are meaningful and those thoughts are meaningful sentences.

Thoughts will come out anyway. Thoughts are having inner intent of feel. Those are meaningful or sometimes not having meaning (meaningless). While speaking, writing, reading you should be able to correct the thoughts otherwise meaningless.

You can analyze the thoughts to understand and convert into a meaningful way or into a meaningful sentence.

If you know or aware of meaning of thought or you can convert into a meaningful thought. 

For converting meaningful thought, you should know very well of any one kind of language (Speakable, Writable, Readable, Correctable).

Meaningful thought having sense of good and to know how to express and how to convert to utilize the thoughts in the right way with knowledgeable.

Meaningful thoughts reveal the knowledge and it will help to Study of learning many things to develop subject skills to work and survive the life in the right way.