Herbs for Happiness.
There's euphoria, and there's true happiness.
Long ago, on a newsgroup far from here, I replied to some bonehead selling yet another far-off expensive exotic that cures everything including taxes, and that was "known also as 'happiness herb'".
Euphoria is a temporary thing; most herbs which induce euphoria will leave you looking for the next fix, which is anything but happiness.
True happiness lies in being content in what you are and do.
And for that, there are few herbs as good as potentilla. If you eat a leaf a day for a few weeks, or a couple of months, you suddenly have the courage to say "no" to all and any influences which don't rhyme with your reason.
And so, after a few weeks, or after a month or two, you'll notice that you have as much space as you need.
I've described this effect as "Potentilla gives you elbows".
Pulsatilla might complement this: if you're stuck on a track and terrified/ frustrated/ bored with it, and have no idea how to change to another track (or even to totally trackless territory), then pulsatilla will help you broaden your horizons.
Taking both herbs at the same time might be a good idea, for some people.