What skill do I need to improve

So I basically I'm a meat head and only rely on my instincts but when it comes to the opponent move I always analyze there next move 80% of the time it's right and now I've been playing well i guess but probably not enough, so I started in February didn't played for like 4 months or 5 and now I started thinking more about chess because I really don't have anything to entertain me and got to 300 to 900 rating in about a month I think and this past week I got to 900 rating since I broke 800 rating and I'm close to getting to 1000 rating and I've been thinking I really don't know any way to stalemate or sacrifice stuff or any tactics to help me become more aware of my moves or my opponent and my early game where the opponent is very defensive is my biggest weakness (because I have a pretty aggressive play style) I'm yapilogist so sorry for all the yapping I just want to know my biggest weakness and how to improve them

you can think before you move

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