I am 22 and about to graduate college. I have ~$8k in stocks that I'd like to sell to feel more financially secure. Is this a bad idea?

As the title says, I'm 22 and want to sell all these stocks. I've never done it before, but I've had them since I was 13. Are there any fees I should be worried about with this much money? I already asked my bank about fees I could incur (as my investment portfolio is through them) and they said it's just a general $8 charge for no matter how much I sell.

I guess I'd just like some advice on this. Thank you in advance!