Britney Spears is shouting out her sons, wishing them a happy birthday month … right after posting about how she had to cut people off for playing mind games.

The singer-songwriter hopped on Instagram Saturday to share several posts … including a tribute to her two kids — Jayden who turned 18 Thursday, though Brit will keep paying child support through November, and Sean who turned 19 today.

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The mother-of-two says she hopes all their bday wishes come true … and shared a few sweet photos from back in the day as well.

Seems the boys are still on their mom’s good side … which ain’t the case for everyone — ’cause right before she shared these pics for her kids, she shared a half-naked post with a caption all about the people she cut off this year.

Spears says she’s reposting photos to her IG — adding it’s good for her self-esteem and self-awareness … before firing off that fans wouldn’t believe how many people she’s cut off this year.

Britney says she’s too sweet and naive … and, she’s allowed too many people to wreck her confidence in recent months.

She doesn’t get into specifics about who’s she talking about here … but, we know she had a rocky end to her relationship with Paul Soliz — putting him on blast for an interaction with paparazzi during which she felt used.

The two also got into a blowup fight at a Los Angeles hotel … so, it wasn’t exactly smooth sailing for the two — and, it would make sense if Brit was talking about him.