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For happiness one way would be, when ever you shower, masturbate (I think you need 50 lust?). You should be able to do this as many times as you want if you pick the Former male origin because they always have enough lust assuming no other perks are effecting your lust.  You should also make sure to eat consistently as it can reduce happiness and you get a boost to you happiness when you eat.

For the Strength and Intelligence your Origin might be effecting one of, or both of these stats. For example the Bimbo origin has a Fitness Minimum of +20 meaning you can't go below that unless you have another perk effecting your Fitness Minimum, but it also has a Intelligence maximum of -60 and a intelligence multiplier of 0.2 meaning you can't go above 40 intelligence with out another perk effecting your Intelligence maximum, and any time you would gain intelligence it would be reduced to 20% of the original value.     Multiplier Example (5 x 0.2 = 1)

So I would recommend looking at the other Origins to see if you like a particular one.  A thing to know is if you pick the Former male origin in like two in game weeks your character can get one of the female origins depending on your actions like if you don't bother increasing you intelligence you'll get the Bimbo Origin.

Another thing to keep in mind is that the game isn't really about making a "perfect character." Your character is always going to have flaws which makes since considering the context of the game, you are literally expected to fail your first mission.