Successful people make decisions fast. Not because they are rash. They simply know what they want. They know that their time is precious and they would hate to waste it away. In order to do so, you need to be clear on yourself and know where you want to go. Do not apologise for being you. People will learn to respect that of you. But you need to be consistent and strong. Because if you are not, you would instead be helping others turn their plans to fruition which is not a bad thing provided that your needs are already or also met. Once you have made the decision, stick with it. If new information comes up and requires you to reassess, consider them carefully. And then take the necessary actions. Do not just bounce at the whiff of a new data. Qualify it first. Doing so allows you to make better judgements.