I have A LOT of hair and it's thick but straight, would getting it thinned out help?

I am actually a student in cosmetology and have actually been working on this kind of stuff. Thinning and layering are two different things. Getting your hair thinned out would actually help out a lot with the thickness. It will not damage your hair. It will make it more manageable. All they do is use this pair of scissors that are called shears and run them through your hair to thin it out and it is not extremely noticeable. Now, if you want to curl it, layering your hair might be very helpful with that and it has the same affect as getting it thinned out would. You might be able to do more with it if you got it layered but it is totally up to you.