Imagine yourself having a conversation with your manager or someone in a relatively similar position about a decision or suggestion you have. How often do you say things like "we have to", "we need to", "we really should", "can we", or "I'd like to"? The problem with all of these statements, from the perspective of someone like your manager, is that they hint at a passion or personal preference that doesn't belong in a decision-making process or conversation. In the flow of a conversation, it may feel like you're merely emphasizing a point and bringing your (presumably solid) technical experience to the table, but to the listener it often makes your suggestions appear self-serving, poorly considered, and possibly irrational from the perspective of the business.
Try to replace the above phrases with "one option is to..." and change your thinking to complete the thought in a way that makes sense. Avoid picking favorite solutions and presenting them as the clear winner or only option. It'll get you thinking in terms of pros and cons and how to persuade other people by appealing to their point of view. It will make you appear more level-headed and capable of making decisions that are good for the business. It'll also remind you of (and force you to fully consider) the frequently hidden option that's often forgotten when presenting a new idea or direction, which is the status quo.