Dear @siamese ,
Thank you for coming here to share your feelings with us. It sounds like you’re going through a really tough time right now, and I’m sorry to hear that you’re feeling this way. 
It’s clear that these mood swings and intense emotions are taking a toll on you. Emotions play a crucial role as signals from our inner selves, letting us know when something needs attention. When we ignore these signals, they often intensify, making it harder to manage our feelings. If your feelings could speak, what would they say?
I’m glad to hear that you’ve reached out to your close friends, although it can be incredibly frustrating when they don’t seem to understand or respond in the way you hope. Friends may not always have the training or skills to listen well and attune to your emotions in the same way a professional can.
Feeling like no one likes you or that your friends might leave can be overwhelming, especially when you know deep down that these thoughts might not reflect reality. It’s great that you can still find moments of joy and connection with your friends, even if those feelings of insecurity return later.
I’ve shared a link here for you to follow up on more professional support. You may want to do some self-assessments to gain an idea of what you may be experiencing, especially if depression is a concern or if it might be something else. Seeking help from a counsellor or therapist can provide you with a supportive and non-judgmental space to explore these feelings further and to learn effective strategies to manage them.
It is possible to feel happy again with the right and support. It’s okay to seek help and to take steps towards feeling better. You don’t have to go through this alone. 
In the meantime, here are some quick self-regulation skills I’d recommend practicing whenever you notice your emotions stirring up strongly again.
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Deep Breathing: Take slow, deep breaths in through your nose, hold briefly, and then exhale slowly through your mouth with a sigh. Repeat several times to help calm your mind and body.
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Progressive Muscle Relaxation: Tense and then relax each muscle group in your body, starting from your toes and working your way up to your head. This technique helps release physical tension associated with stress.
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Mindfulness or Meditation: Take a few minutes to focus on the present moment. You can do this by paying attention to your breath, observing your surroundings, or practicing a guided meditation. This can help bring a sense of calm and clarity.
Practicing these techniques regularly can support you in managing intense emotions and finding a greater sense of balance.
I hope the above has been helpful and if you’d like more resources or if there is anything else you’d like to share with us, please do. We’re here to listen to you, your feelings are valid and you matter! 
Take care,
Cool Breeze =)