If I had to use that construction, I would say "Having had dinner with my family, I just feel so happy". (Unless it's a formal celebration like a wedding or something, you wouldn't say "the dinner" and you wouldn't say "attended".) So what you have in that construction, as in the one you were taking as a model, is a present participle "having" combined with a past participle "had" (or "attended" as you like) that together give the construction a perfect aspect that works just as if you had said "I have had dinner with my family and I just feel so happy." -- in other words, you mean you finished it, and it has the result that you now feel happy. In the original, the participle phrase is working like an adjective applied to "I". The bit about "make" makes me wonder if you are confusing the present participle with a gerund. You can say "Having dinner with my family just makes me feel happy" -- and indeed that's a very natural thing to say -- but that's a different construction despite similarities in appearance, and it has a different meaning, too, that it makes you happy every time you have dinner, not just on this one occasion. In this case, "having dinner with my family acts as a noun, and it can be the subject for the verb "makes".

Hi! There are a multiple ways to answer this. First, I'm assuming you want to say this in past tense. The dinner happened in the past and you are referring to a specific meal. Following the example, you can say "Having attended the dinner with my family, it just made me so happy." or "Having attended the dinner with my family, I just feel so happy." In context, using "the" before dinner might suggest that it was a special event of some sort. If you went to dinner with you family at a restaurant or had dinner at your house, you can drop the "the" as in "Having attended dinner with my family, I just feel so happy." If you want to simplify even more and sound bit more natural, you can say the following: For a special event: "Attending the dinner with my family made me feel so happy." For an everyday meal: "Having dinner with my family made me feel so happy." I hope this helps! --Q