Problem  1:

I always use the same password for all my accounts and applications. I do not like to use complicated passwords because it is difficult to remember and too long. What do you think?.... 

I understand why you'd feel that way! It can be a hassle to remember different, complicated passwords for each account, and many people face the same issue. However, using the same password for all your accounts is a major security risk. If one account gets compromised (through hacking, phishing, or a data breach), all of your other accounts are at risk too.

Here are a few suggestions to balance security and convenience:

1. Use a Password Manager

2. Two-Factor Authentication 

3. Passphrases

4. Use Unique Passwords for Important Accounts

5. Write down in a notebook your password put it on a safe place.

IN MY OPINION IF YOU USE ALL THIS SKILLS YOU SHOULD REMEMBER YOUR PASSWORD AND YOUR PASSWORD WILL BE VERY SAFE.