we can only merge, when we are in the same state as when we ventured forth from The One. We were pure. Spirituality means liberating oneself and others from darkness, not being engulfed by the chains of prejudices and duality and duality comes forth in little things as much as it comes forth in big stuff. The path of Oneness is the path of taking one and all along with us, in spite and despite, whether they think, act, speak, dress, conduct themselves, like you do. The path of Oneness means coming from compassion. Compassion means coming from an understanding that each one of us is a strange blend of past life karmas, dna and upbringing.  We have been constantly told not to lie, not to steal, abstain from wrath and lust.The problem is that most of us have been given the larger picture by our parents, our teachers, our so called moralists and the little things that matter equally have been waylaid on the pathway to The One.you operate knowing that only the Spirit is real and all else a mirage, then one's priorities too change and with the change of priorities comes forth compassion and largeness of heart. spirituality means Oneness and when you operate from the Spirit, never forgetting that eventually only Oneness is true and everything that creates shadows and duality are false, being spiritual, means to operate from the Oneness of the Spirit. live it with self-awareness and you will face all great and small difficulties with ease.
Soul may have positive and negative characteristics for example soul is brave,powerful,selfless and positive. The negative aspects which arise from mind may be ego,stubbornness and negative thinking. Learn to live in presence of god. Ego is due to physical and mental power,one can control with prayers concentration and  meditation. Be humble and selfless.