By the experience of active love. Strive to love your neighbour actively and indefatigably. In as far as you advance in love you will grow surer of the reality of God and of the immortality of your soul. If you attain to perfect self-forgetfulness in the love of your neighbour, then you will believe without doubt, and no doubt can possibly enter your soul. This has been tried. This is certain.
Love is always mutual and reflective. You may hate me, and if I want to love you, you repulse me. But if I persist, in a month or a year you are bound to love me. It is a well-known psychological phenomenon.
If you're not broadcasting what people feel is their truth as it relates to you, well that becomes a problem. If your not broadcasting how much you love your boyfriend or husband via social media, problems occur in the home and I really think this is happening more than we acknowledge.