Yes, sometimes it is important and helpful to make decisions alone. It’s making you feel more independent and responsible for yourself. It’s important to be true to ourselves and what we value in life. When you factor into a decision the things that are important to you, the best option might become obvious. At any rate, you’re more likely to end up with an outcome you’re happy with. But I think you need to do that only if you are sure you want that and you’re doing it right. But it’s not a shame to ask for a help when you feel you really need that. There are a lot of people in our surrounding that are ready to help us make serious decisions (our parents, siblings, friends etc). It may be easier for us to make a decision after asking for advice and we can be more confident in it.