Show/display entries next/prev except entries with lightswitch field active
I got it by simply adding a condition where I was displaying my previous entry.

{% if prevEntry %}

    {% if prevEntry.comingSoon %}

        {# if comingSoon field is active, hide the link #}

    {% else %}

    &lt;div class="previousProject"&gt;
        &lt;a href="{{ prevEntry.getUrl() }}"&gt;
            &lt;span class="visibleText"&gt;Previous&lt;/span&gt;
            &lt;span class="projectTitle"&gt;{{ prevEntry.client }}&lt;/span&gt;
        &lt;/a&gt;
    &lt;/div&gt;

    {% endif %}
{% endif %}