This applies not just for yourself but for others, but your thoughts, no matter what they are, are legitimate. They may cause others trouble in terms of getting their head around it, but it doesn’t make them invalid. Mental health difficulties aren’t ranked, look how many famous people that ‘have it all’, haven’t been able to cope. Likewise, people that have very little get their heads down and cope very well each day. Dont suppress those thoughts. If you’re feeling sad, isolated, suicidal even, they’re legitimate. They’re not bad, they’re not wrong, they’re how you’re feeling. There’s no shame!