One very important thing to avoid here is religious universalism or perennialism, the notion that all religions are not so very different from each other and have basically the same goal. They don't. Not at all, and their differences are nothing short of staggering, just look at the different ideas concerning an afterlife or the soul (or the absence of it).
"Life is suffering" is not outweighed by all the joys human existence brings, rather it's the proposition that all joy is transient and craving love, happiness, possessions, whatever (or desparately trying to hold on to them) is ultimately but another source of misery as well since all these things are impermanent as well. If you were raised in an Abrahamic faith (e.g. me as a Catholic) and don't educate yourself sufficiently in a religion you investigate, you're likely to look for do's and don'ts first which is pointless here because life is not suffering because of any (original) sin or some profound human transgression, suffering simply
is, i.e. a mere statement of fact. Having a personality and being attached to it isn't "sinful", it's just the way things are, and you won't be 'punished' for refusing to let go of it - it will certainly hold you back if you decide to walk the path of the Buddha but that's your own decision to make. It's not a hegemonizing religion like the Abrahamic faiths with their claim that you must either exclusively believe in their god or go to hell. Buddhism is more like a philosophy than a religion (although it may look like one to outsiders watching common folk living their spirituality in Tibet, Sri Lanka, or Myanmar), all it requires you to put your trust in its teachings after thoroughly thinking it through - no (enforced) blind faith required.
I would stop thinking in terms of 'good', 'bad', how to live and what to avoid if I were you. And one of these days I'm going to investigate why Freud's concept of the German
'Ich' (eng. simply 'I' or 'Me') was rendered as the Latin word 'Ego' in English translations of his work, how all kinds of gurus like Ramana Maharshi (currently reading
a book about this 'knowledge transfer') suddenly latched on to this term in the 1930ies, made the Ego the repository of all that's bad and unspiritual in a person and played it back to the West. Amazing, really.
The way I understand it (and I'm still reading books about it), the Left Hand Path only originated with the foundation of LaVey's Church of Satan and Aquino's Temple of Set, with Michael Aquino being the superior theorist, in my opinion. The idea seems to be radical individualism as opposed to surrender to the divine, indulgence instead of abstention, antinomism (= going against the grain) instead of meekly complying with societal norms, as well as self-deification instead of eventually merging with the godhead.
If you're looking for an answer from me as to what's more 'spiritual' (or gods forbid, The Truth!), trying to overcome your ego, revel in it, or think or behave in any specific way, I can't help you. We generally don't have RHP vs. LHP fights here, nobody wants to root out 'black magic', people work with demons, use psalms and Christian prayers in their workings, vampyres also get their say, and chaos magicians do and use whatever they want anyway. It's all pretty ecumenical here.