My tips for self-studying Czech:

• Schedule in 30 minutes every day to devote to learning Czech. 
• Make it routine and stick to it.
  
• Don't beat yourself up if you miss a few sessions. Simply get back on track. 
• After a few months of continuous self-studying check in to see what you've learned. You'll be surprised to see how much progress you've actually made.
• Be patient. Don't expect results overnight. It takes time to learn a new language.