To avoid making costly mistakes, you can conder,
Keeping separate funds for expenses and emergencies
Seeking financial advice from those who have been in bitcoin investments for long. Making informed investment decisions
Even though everyone must make their own decisions, but being informed and patient can help you succeed in the long run.
I also have a different suggestion to make on this, if you think you have money assigned for a bitcoin investment and would appreciate touching over it, then try to distance yourself far away from where you could get hold of the money or even the bitcoin after investing, one can make use of a time lock to avoid getting in touch with it, also, it can be secured on a cold storage and then we device for a means to securely save the private keys.
We need to know that one don't need to starve just to invest bitcoin. The most important thing investing bitcoin is to have a source of income and only invest what you can afford irrespective of the amount, the remaining money should be what can be use to manage ones self. Atleast we have DCA method that can be use to accumulate bitcoin that one can easily afford. It is very clear bitcoin investment is essential but don't deprive yourself the things you need, especially things that will be of benefit to your wellbeing(health). Bitcoin is a longterm investment and what ever amount one can be able to accumulate, it will still be profitable in the future.