You're out of balance. Relate stress to systems theory. Conflict occurs when external demands exceed internal decision supply. Know conflict handling strategies. To be assertive in this context is to want to satisfy your own concerns.
Compromise can evoke favorable evaluations without the wimp tag.
Compromise can be seen as a strength. Often the ability to compromise comes from strength. The weak fear to compromise. They hunker down and fight. Interaction, feedback and communication tend to support cooperation, trust and win-win outcomes to negotiations.